I we are arguing the meaning of the word deadline at this point. According to my dictionary, it's not really a deadline if you can just move it as soon as it s

I we are arguing the meaning of the word deadline at this point. According to my dictionary, it's not really a deadline if you can just move it as soon as it seems inconvenient or out of reach. I think maybe Lucas Costa calls those things preemption points. It's a time decided in advance against which you check your progress and assumptions, but with no connotations that work must be complete by that point, which is strongly implied calling it a deadline.