I signed up for a black-market time-travel tour as soon as I heard about them. (The first rule of Time Club etc.)
There’s an hour long pre-mission briefing on how you must be extremely careful in what you say or do as the smallest event could have future-changing consequences.
After that, they give you back your money, admit that there is no time machine, and tell you “now go and do the smallest thing you can to make the future better”.
I’m not even mad.