Log scales tend to flatten out rising charts, thus masking unstable rises.
Comment? Discussion?
That way, you can look at the chart, and see that a given slope in the past and low prices and a given slope recently might have the same slope.
A linear scale would show the same rates of increase as being very flat if at low prices, and very steep at high prices. Worse, they obscure real information and distinctions by making steep rises look vertical, even though there may be major differences in the rate of increase. The current rise and the 1980 spike look the same in the linear graph, but the significant difference is revealed in the log graph.
A log scale won’t give you an alarming hockey-stick graph in the long term of a gradually rising value, which might be important to illustrate. But the hockey stick obscures lots of data useful to investors.
Thanks for discussing.