My two favorite trading terms: “catching a falling knife” and “dead cat bounce”. You don’t want to buy until you’re sure it’s reached bottom. So you look for signs of rebound, but you can be fooled by a dead cat bounce. Because if dropped from high enough, even a dead cat will bounce before coming to rest.

Being able to do the opposite of what others do is a useful quality to have as an investor.

I don't tell random people to "buy the dip" because I don't want to be responsible for the myriad dumb ways people interpret that advice, but it's not at all an unreasonable thing to say to someone who knows what they're doing.

> Being able to do the opposite of what others do is a useful quality to have as an investor.

Textbook example of survivorship bias.