There are certain type of questions which typically generate multiple diverging answers in a relatively short time, all posted in the same time window. These questions, for example:
What is the best way to use [common language feature]?
After posting my own answer, I come back 15 minutes later to find that another user had revised his post to include all of my arguments. He had essentially included a "detailed" version of my answer in his own.
I'm confused how aggregating other's posts in your own answer is viable when all posts are versioned and and all revisions, time-stamped. When I agree with what others have posted, I upvote them, and explicitly refer to their answer in my own if I must.
I'm extremely tempted to downvote, even though the answer is not necessarily wrong. I'm worried that if I let this go, the other answer will be accepted and receive the most votes.
What is the proper reaction to this? Should I call them out on it, just downvote the answer, let it go?