I mean, if you define "being right" as being on the right side of the trade - then by definition it makes sense to "trade against" something if you think you kn

I mean, if you define "being right" as being on the right side of the trade - then by definition it makes sense to "trade against" something if you think you know better. In reality, it's nowhere near this simplistic. You have to time it. Timing is impossible. Manipulation happens.