Technical vs. fundamental
Technical analysis won the dispute with fundamental analysis over profitable short-term and medium-term investing.
Fundamental analysis worked for many – but not all – investors before the 1970's when clean data, fast data broadcast, charts, Indicators and mechanical trading systems were almost nonexistent, and when whatever few charting tools existed were the exclusive realm of professionals.
Investors of today who refuse to learn technical analysis are fighting a losing battle: flogging dead horses never pays.
Technical analysis is accepted and used extensively by professional money managers and non-professionals alike, and evolved as much as to produce a distinct group of investors – the chartists – who see no reason to use the same old news, company or industry reports and grapevine rumours in order to make investment decisions.