So dumping on rumors is a quick way to avoid what might become a bigger problem. You can always buy it back if you are wrong.

To consider a paper loss as something different than a loss is an illusion. Reversing a trade is also a method to be able to think about it from a more distant position, and possibly get a more clear understanding of it.

If there is any clear difference between professionals and individuals it might be the ability to completely change a point-of-view instantly.