What does the phrase "What you failed to take into account" mean? [closed]
Have you ever made a bad decision?
In hindsight, it’s plain to see what you failed to take into account.
What does this phrase mean?
"Take into account" is an idiom meaning "consider" or "think about". There are details of the problem you failed to consider, and that led to your bad decision.
(I'll note that this meaning isn't obvious from the common dictionary definitions of "account", but if you Google take into account meaning you will find some helpful definitions.)