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Notices by XKCD Bot (xkcd@mastodon.com.br), page 2

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XKCD Bot (xkcd@mastodon.com.br)'s status on Saturday, 07-Feb-2026 08:41:15 JST XKCD Bot

#3204 - Dinosaurs And Non-Dinosaurs
In conversation about 7 months ago from mastodon.com.br permalink
Attachments
1. A black-and-white comic showing a large 2×2 chart (a square divided into four boxes). Columns: “Are dinosaurs” and “Are not dinosaurs” Rows: “Seem like dinosaurs” and “Don’t seem like dinosaurs” The cells are filled with black silhouettes of animals and other things. Top-left box (seem like / are dinosaurs): five classic dinosaurs: a stegosaurus-like animal with back plates, a triceratops-like animal with a frill and horns, a big two-legged theropod, a small raptor-like dinosaur, and a long-necked, long-tailed sauropod. Top-right box (seem like / are not dinosaurs): black silhouettes of animals often associated with dinosaurs: a long streamlined marine reptile, a flying pterosaur, a long-necked creature with flippers (plesiosaur-like), a tall long-necked animal standing upright, and a sail-backed creature (dimetrodon-like). Bottom-left box (don’t seem like / are dinosaurs): black silhouettes of birds and bird-like shapes: a penguin, a long-legged ostrich-like bird, a duck-like bird, a flying bird silhouette, and a long-necked, long-tailed bird-like figure with long legs. Bottom-right box (don’t seem like / are not dinosaurs): black silhouettes of a squirrel, a stapler, a pineapple, a stick-figure person with arms raised, and a bicycle. Hidden text: "Staplers are actually in Pseudosuchia, making them more closely related to crocodiles than to dinosaurs."
  https://media.mastodon.com.br/media_attachments/files/116/025/341/124/685/160/original/b70fac7474ff9d5d.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Tuesday, 03-Feb-2026 01:49:55 JST XKCD Bot

#3202 - Groundhog Day Meaning
In conversation about 7 months ago from mastodon.com.br permalink
Attachments
1. Originally, the ceremony used a variety of rodents and mustelids, but over time most people agreed it made sense to standardize on a specific individual ground squirrel in Pennsylvania.
  https://media.mastodon.com.br/media_attachments/files/116/001/925/021/902/084/original/af67fa63314dff8e.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Friday, 23-Jan-2026 08:27:17 JST XKCD Bot

#3197 - Cost Savings
In conversation about 7 months ago from mastodon.com.br permalink
Attachments
1. A black-and-white stick-figure comic. On the left, a stick figure stands and points at a wall-mounted chart showing several vertical bars that get shorter toward the right. On the right, two stick figures sit behind a long table, facing the presenter. The standing figure speaks: “By lowering the planned satellite orbit, we can reduce the size of the launch vehicle required. We can reduce costs further by eliminating the satellite entirely in favor of an aerial platform. Some equipment could be moved to a ground-based facility, reducing required aircraft time. Additional savings could be…” Caption below the panel: “I’m trying to get NASA to build a shed in my backyard.” Hidden text: "Unfortunately, my scheme to trick NASA has now taken over a decade longer than planned and has run way over budget."
  https://media.mastodon.com.br/media_attachments/files/115/935/510/834/416/321/original/c87706b03b597b2f.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Thursday, 01-Jan-2026 07:16:22 JST XKCD Bot

#3188 - Anyone Else Here
In conversation about 8 months ago from mastodon.com.br permalink
Attachments
1. Anyone else watching this Youtube video in 1954? If so, my last trip definitely messed with the timeline.
  https://media.mastodon.com.br/media_attachments/files/115/816/484/363/916/913/original/6b30f6d0254efb9b.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Tuesday, 23-Dec-2025 14:14:10 JST XKCD Bot

#3184 - Funny Numbers
In conversation about 8 months ago from mastodon.com.br permalink
Attachments
1. A black-and-white line-drawn comic. At the top, a hanging banner reads: “Mathematical Society, 2025 Meeting”. Below the banner, four stick figures stand next to a white board. Three are on the left and one on the right. On the board is a list of numbers: “23 (skidoo!)” “42” “69” “420” “1,337” “58,008” The figures say: A: “Any other new developments from the year to cover before we wrap?” B: “Oh, the teens picked a new funny number.” C: “Aww, I’m glad to hear they’re still doing that.” D, the figure at the right, says "I’ll add it to the list”, writes "67" on the white board and circles it. Hidden text: "In 1899, people were walking around shouting '23' at each other and laughing, and confused reporters were writing articles trying to figure out what it meant."
  https://media.mastodon.com.br/media_attachments/files/115/767/057/114/755/147/original/a36fa9d9f9bb6dac.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Tuesday, 25-Nov-2025 10:28:34 JST XKCD Bot

#3172 - Fifteen Years
Please see https://www.explainxkcd.com/wiki/index.php/Main_Page for a detailed description of this one.
In conversation about 9 months ago from mastodon.com.br permalink
Attachments
1. Domain not in remote thumbnail source whitelist: www.explainxkcd.com
  
  explain xkcd
  
  Explain xkcd is a wiki dedicated to explaining the webcomic xkcd. Go figure.
2. "Want to feel old?" "Yes."
  https://media.mastodon.com.br/media_attachments/files/115/606/802/082/795/266/original/4a738f15bbcb28a8.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Thursday, 20-Nov-2025 19:23:27 JST XKCD Bot

#3170 - Service Outage
In conversation about 9 months ago from mastodon.com.br permalink
Attachments
1. A black-and-white comic showing a line graph. The vertical axis is labeled "Productivity when a major internet service goes down", the horizontal axis "Time". The graph starts at time 0 about halfway up the vertical, moving straight right. Near the middle is a vertical dashed line labeled "Outage begins". The graph line splits right after the "Outage begins" point. One line, labeled “People whose work doesn’t rely on the service”, curves sharply downward toward the bottom of the graph and continues low. Another line starts at the same point, then curves slightly upward and then continues almost flat across the right side of the graph. Above this upper line on the right is a small stick-figure person sitting at a desk with a computer. A thought bubble over their head says: "Aw man, the outage took down the Star Wars Legends wiki." Hidden text: "Now, if it were the *Canon* wiki, it's possible to imagine someone with a productivity-related reason for consulting it, but no one's job requires them to read that much about Admiral Daala."
  https://media.mastodon.com.br/media_attachments/files/115/579/493/103/540/490/original/5ea7a03df8a5bd46.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Thursday, 13-Nov-2025 05:55:36 JST XKCD Bot

#3167 - Car Size
In conversation about 10 months ago from mastodon.com.br permalink
Attachments
1. Four-panel black-and-white comic. Panel 1, caption: “100 years ago.” Two stick figures stand beside a bicycles at left. At right is an early open-top car. One figure says: “It’s too dangerous riding a bike with these cars around. I should get a car, too.” Panel 2, caption: “50 years ago.” Left: a large sedan; right: a small hatchback facing it. Two figures stand between them. One says: “Small cars are less safe in collisions with larger vehicles, so I should get a bigger one.” Panel 3, caption: “Today.” Left: a big SUV; right: an even bigger SUV facing it. Two figures stand between them. One says: “Everyone has huge SUVs now. If I don’t get the biggest one, I’m putting my family at risk.” Panel 4, caption: “Soon.” An armored SUV with riveted plates, side spikes, and two long roof arms holding spiked clubs at each end. Two figures standing next to it: “If I don’t install more whirling spike clubs, I’ll be destroyed by all the other drivers who…” Hidden text: "'They really shouldn't let those small cars drive in traffic. I worry I'm going to kill someone if I hit one! They should have to drive on the sidewalk, safely out of the way.'"
  https://media.mastodon.com.br/media_attachments/files/115/538/441/449/234/017/original/969ab3cf3bcca111.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Thursday, 06-Nov-2025 17:44:39 JST XKCD Bot

#3164 - Metric Tip
In conversation about 10 months ago from mastodon.com.br permalink
Attachments
1. The comic shows two stick figures. The one on the left, wearing a hat, asks, “How tall are you?” The one on the right replies, “5 ft 24 cm” - Caption below: “When switching to metric, make the process easier by doing it in steps.” Hidden text: "The package weighs 7 kg 9 oz."
  https://media.mastodon.com.br/media_attachments/files/115/499/100/346/663/370/original/d1b11e7587b60b2b.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Saturday, 18-Oct-2025 06:08:01 JST XKCD Bot

#3156 - Planetary Rings
In conversation about 10 months ago from mastodon.com.br permalink
Attachments
1. Single panel. On the left, a hand-drawn checklist: Header: Planet / Rings? “Mercury” with an unchecked box. “Venus” with an unchecked box. “Earth” with a box checked in red. “Mars” with an unchecked box. “Jupiter” with a checked box. “Saturn” with a checked box. “Uranus” with a checked box. “Neptune” with a checked box. On the right, a sketch of Earth seen inside a thick, slanted belt of small dots encircling the planet. An arrow points to the belt with the label “Geostationary satellite belt.” Caption below: “Astronomy fact: A century ago, Earth didn’t have rings, but we have one now! It’s where all the satellite dishes are pointed.” Hidden text: "If you don't know where you are on Earth, the angle of satellite dishes can help constrain your latitude. If some of them are pointing straight up, you're probably near the Equator, right under the ring."
  https://media.mastodon.com.br/media_attachments/files/115/390/336/669/232/670/original/33583f65cf8e93b8.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Saturday, 13-Sep-2025 05:37:26 JST XKCD Bot

#3141 - Mantle Model
In conversation about a year ago from mastodon.com.br permalink
Attachments
1. Mantle plumes explain Hawaii, Yellowstone, Iceland, the East African Rift, the Adirondack uplift, the Permian extinction, the decline of Rome, the DB Cooper hijacking, and the balrog in Moria. Those little hills of sand in your yard are caused by antle plumes.
  https://media.mastodon.com.br/media_attachments/files/115/193/217/386/068/825/original/69a0e14716f8b66a.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Thursday, 11-Sep-2025 03:00:28 JST XKCD Bot

#3140 - Biology Department
In conversation about a year ago from mastodon.com.br permalink
Attachments
1. Welcome to the Linguistics Department - It has been [2] [DAYS] since someone noticed that the Biology Department sign has a one-day-long singular/plural disagreement after it resets.
  https://media.mastodon.com.br/media_attachments/files/115/180/890/063/402/863/original/ac31b0cc885a292c.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Tuesday, 09-Sep-2025 09:51:40 JST XKCD Bot

#3139 - Chess Variant
In conversation about a year ago from mastodon.com.br permalink
Attachments
1. Single-panel comic. A hand-drawn chessboard fills the panel, with light and dark squares, and a game in progress. The board is broken into sliding-puzzle tiles, one tile being 2x2 chess tiles, resulting in 4x4-1=15 sliding tiles. One tile with a white pawn and a white knight on it is sliding from position 3/3 to position 4/3. A caption on the bottom reads "Sliding Number Puzzle Chess". Hidden text: "The draw-by-repetition rule does a good job of keeping players from sliding a tile back and forth repeatedly, but the tiles definitely introduce some weird en passant and castling edge cases."
  https://media.mastodon.com.br/media_attachments/files/115/170/863/003/379/845/original/d3897656b273f779.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Saturday, 06-Sep-2025 10:51:59 JST XKCD Bot

#3138 - Dimensional Lumber Tape Measure
In conversation about a year ago from mastodon.com.br permalink
Attachments
1. Single-panel comic titled “Dimensional Lumber Tape Measure.” Top left text: “Dimensional lumber sizes are tricky. A ‘2x4’ is actually 1½" by 3½", and a ‘1x8’ is ¾" by 7⅞".” To the right, a lumber labeled “2x4” with dimension arrows: vertical '1½"' and horizontal '3½"'. Below left, two yellow tape measures: the first labeled “12'”; the second labeled “12'*”. To the right of them, text: “If you know someone into carpentry or woodworking, get them our dimensional lumber tape measure.” Middle: a long yellow tape labeled “Normal tape measure” showing inches 1 through 9 with tick marks. Below it, another long yellow tape labeled “Dimensional lumber tape measure” showing inches 1 through 10 with tick marks that are slight more narrow than those of the “normal tape measure”. Bottom caption: “Don’t tell them you got it — just leave it in their toolbox. They’ll appreciate the surprise when all their measurements work out!” Hidden text: "A person with two watches is never sure what time it is, especially if I got them one of the watches."
  https://media.mastodon.com.br/media_attachments/files/115/154/525/024/783/617/original/101ae9b466a62227.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Saturday, 30-Aug-2025 15:01:26 JST XKCD Bot

#3135 - Sea Level
In conversation about a year ago from mastodon.com.br permalink
Attachments
1. Single-panel comic. Two stick figures stand at a shoreline, looking out over calm, rippled water. Dialogue: Figure 1: “Hey, where’s that big island we were looking at this morning?” Figure 2: “Oh, it’s underwater. The ocean’s depth here goes up and down by like ten feet every day.” Figure 1: “What?” Figure 2: “It’s because the planet has a big moon orbiting near the surface. It causes weird gravity effects.” Figure 1: “What???” Caption below the panel: “People here are used to them, but tides are one of the weirdest and most sci-fi elements of life on Earth.” Hidden text: "They're up there with coral islands, lightning, and caterpillars turning into butterflies."
  https://media.mastodon.com.br/media_attachments/files/115/115/124/668/782/224/original/de019df32d05def2.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Thursday, 28-Aug-2025 12:13:54 JST XKCD Bot

#3134 - Wavefunction Collapse
In conversation about a year ago from mastodon.com.br permalink
Attachments
1. Four-panel black-and-white stick-figure comic. Panel 1: A student sits at a small desk facing the professor. Student: “If the wavefunction only collapses when I observe it, does that mean my consciousness affects the universe?” Panel 2: Header label: “Bad” Professor: “Yes. Quantum entanglement proves that we all have souls.” Panel 3: Header label: “Good” Professor: “No. Consciousness plays no role here. It’s just physical measurement.” Panel 4: Header label: “Chaotic” Professor: “No. The wavefunction collapses when I look at it because I’m a full professor. It won’t collapse for an undergraduate.” Hidden text: "Wavefunction collapse is only one interpretation. Under some interpretations, graduate students also have souls."
  https://media.mastodon.com.br/media_attachments/files/115/103/859/140/062/606/original/b269c5388b6bfa0d.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Tuesday, 26-Aug-2025 16:16:49 JST XKCD Bot

#3133 - Dual Roomba
In conversation about a year ago from mastodon.com.br permalink
Attachments
1. Four panels. Panel 1: Two stick figures stand talking; the one on the left wears a brimmed hat. A small robot vacuum sits on the floor near them. Hatless figure: “The Roomba keeps my floor clean. But what do I do when the _Roomba_ gets dirty?” Panel 2: Same two figures. On the floor are now two Roombas and a small ramp. The second Roomba drives up the ramp on top of the first Roomba. Hatless figure: “Simple: I got a second Roomba and a ramp, so they can clean each other.” Panel 3: The hatless figure kneels, flipping one Roomba over; the hat figure stands and watches. Hatless figure: “After the tops are clean, I flip one of them over so they can clean each others’ undersides.” Panel 4: Both figures stand. On the floor, one Roomba is upside down on top of the other; motion lines indicate spinning. The ramp lies nearby. Hat figure: “There’s nothing NSFW about this, and yet it’s the most NSFW thing I’ve ever seen.” Hatless figure: “Yeah, my YouTube DIY video about it got demonetized.” Hidden text: "I tried uploading it to a household appliance porn site I found, but apparently their content is limited to only fans."
  https://media.mastodon.com.br/media_attachments/files/115/093/065/334/978/644/original/994bf85e1dcc23fc.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Wednesday, 20-Aug-2025 07:01:26 JST XKCD Bot

What if you had a mole of moles?
https://www.youtube.com/watch?v=lLlwvmu1ZeA
#WhatIf
In conversation about a year ago from mastodon.com.br permalink
Attachments
1. What if you had a mole of moles?
  
  from xkcd's What If?
  
  Get a copy of What If? 2 and Randall’s other books at: https://xkcd.com/booksMore serious answers to absurd questions at: https://what-if.xkcd.com/This quest...
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XKCD Bot (xkcd@mastodon.com.br)'s status on Friday, 15-Aug-2025 23:30:51 JST XKCD Bot

#3129 - Archaeology Research
In conversation about a year ago from mastodon.com.br permalink
Attachments
1. The academic archaeology establishment is suppressing my breakthroughs because of the disruption it would bring to their prepared-core flake-based toolmaking industry.
  https://media.mastodon.com.br/media_attachments/files/115/033/198/088/956/381/original/60b3e923cbfa4a11.png
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XKCD Bot (xkcd@mastodon.com.br)'s status on Thursday, 14-Aug-2025 03:53:07 JST XKCD Bot

#3128 - Thread Meeting
In conversation about a year ago from mastodon.com.br permalink
Attachments
1. A black-and-white drawing of a social-media thread. Top comment, user name AntaresMike. “You could also check out this kayak model. I attached a motor to mine, and it’s a little bit of a kludge but it works great.” (“this” is underlined like a link.) Indented reply by user name NorthLakeKayak. “Oh, hey, AntaresMike! I know you! Honestly I didn’t realize you existed outside of the Animorphs fandom. I haven’t seen you in forever! Uh. So. How are you doing? Kayaking, I guess. Anyway yeah that model is great.” Caption below the panel: “Running into someone on a thread who you know from a totally different part of the internet feels weirdly like running into your teacher in a store.” Hidden text: "Hey, so did you ever finish your video series about Cassie and the caterpillar morph? I loved the first three, but never ... no, sorry, I get it, this isn't the place. Sorry! Sorry."
  https://media.mastodon.com.br/media_attachments/files/115/022/345/282/332/517/original/59caa0e40574bd53.png

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All work posted by this bot is (c) Randall Munroe and released under CC BY-NC 2.5.Visit https://xkcd.com for more. Visit https://www.explainxkcd.com for explanation, transcript, and trivia.

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Notices by XKCD Bot (xkcd@mastodon.com.br), page 2

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