What's a bit of good advice that's really bad advice?

https://lemmy.world/post/13768235

What's a bit of good advice that's really bad advice? - Lemmy.World

You know, like “always split on 18,” or “having kids is the most rewarding thing you can do in life.” What’s that one bit of advice you got from a trusted friend that you know deep, deep down would just ruin your thing?

“always split on 18”? What is that supposed to mean?

Also please delete the second one, we need to trick people into having kids to keep the line going up.

Playing blackjack, when you have a pair and split. You don’t actually often split on a pair of 9s.
So it’s kinda like “quit while you’re still ahead” type of deal? I don’t think any type of gambling parabolas can be good advice considering, well, the nature of gambling.
No, it’s not something that is meant to be broader advice or a metaphor for something else, it’s literally advice for playing blackjack. What they’re saying is that it isn’t actually a good idea to split on an 18 when playing.