Early on in my career I’ve wasted time on projects implementing the wrong thing a few times so ever since I clarify to a fault even if it doesn’t sound weird. If something can be interpreted multiple ways I always ask for clarification even if one interpretation is “more popular”. I’d rather spend 5 minutes asking for clarification than waste a week of everyone’s time.
Since then I don’t think I’ve ever implemented something “wrong”. There might be miscommunications in other parts of the communication chain but never with me.
Up their butt? /s