"Which will cause the same emotional swing as an increase in the value of something from $1 to $1.50? Will it be an increase from $50 to $50.50, or an increase from $50 to $75? Naturally, the latter,"
"relative performance, which is in tune with what people are interested in and what influences their trading decision"
In other words, log is more emotional. If you were working with say, weather, then linear would be better.
Such as basic thing, took quite a bit of searching to find info and so far still haven't found anything scientific to measure this.
if we really had breached that huge bear triangle, we'd be on a bull rocket of euphoria -- but the fact that we're *not* is evidence that such a breach has not occurred -- which you would notice if you switched to log scale. ;-)