To my understanding, this answer:
- directly answer the question, with examples in math
- has foundation in cognitive psychology and cognitive linguistics
3 downvotes affirm that it misses an important point, but I can't see where. Why do you feel it's incorrect or doesn't make sense?
A reason given by Carlo Beenakker is that there has already an answer. In my point of view (aka the one who wrote both), the two answers discuss two different topics, to the point that editing it will change the content significantly. "The rush" in the old one is my primitive understanding of the tip of the tongue phenomenon, memory, cognitive load and problem-solving, while the new one is about word formation and semantic change. There are some overlap, but no answer is better than the other.
If we assume good faith and have perspective-taking on others, then before downvoting it we should take a step back to ask "wait, what if this guy has already considered this?" I actually had thought about whether I should edit the old one, post a new one and keep the old one, or post a new one and delete the old one. Editing is fine for me, but in the end I chose the last one, because (1) I was quite embarrassed on the old one, (2) wanted to see how far the new one can convince you, and (3) wanted to keep the site clean for now. It also allows the possibility to either undelete it in the future, or combine two of them into one single answer, when I have better understanding on cognitive load.
The core philosophy of Stack Exchange is that the content rules it all. Under this mindset, then even when Todd's comments are extremely valuable they need to be perceived as unrelated to the new one. If you concentrate on the merit of the answer, and only on the merit, then there is no reason to downvote it because another answer is deleted or not. A comment saying what option you prefer doesn't harm that spirit.
My decision of deleting the old one may not be good, but it's still in an effort to keep the site clean. If that's the only reason the new one get downvotes, then I don't agree with it.