It's something that we all do way too much, saying sorry for something that doesn't even need to be apologised for. We've all done it before, normally without even thinking, but as this comic by New York based artist Yao Xiao shows, we really need to stop. The idea isn't to never apologise for anything ever again of course but rather say "thank you" when the situation doesn't require an apology and as you can see from the comics below saying the latter can have a surprisingly positive outcome.