mathsfreak, you state a presumption that "a system that you know really works well"
which you then question by your 'How stable is any system?' thread
Rule # 1: PriceTime Movement is IRREGULAR
since PTM is irregular, those times a 'really works well' system doesn't 'work' may be
the occasions when losses are so large they substantially reduce prior profits
in both for example 'gut feeling vs. analysis' :
http://www.trade2win.com/boards/showthread.php?t=25104
and 'The exit of a trade: how? when? where?':
http://www.trade2win.com/boards/showthread.php?t=25049
entering the trader's equation is 'discretion' — individual user input
comes the question of when next will the 'really works well' system not work
will the trader sit too long before exiting a losing trade with a now large loss — discretion
not trade the next signal by second-guessing the system — discretion and
the 'emotion' of it all
should the individual be trying to Day/scalp trade ? trade D-t-Ds/Ds-t-Ws/Ws-t-Ms ? or
not trade at all and employ/deposit funds with a professional
more times the market is entered/traded = more potential losses
greater the number of self-defeating actions/losses affect emotion and capital and the
trader must keep 'beginning again' until profitable, trading is not "very automated"
rules are fixed, too many = statis or, whipsaws, the PMT is Irregular
many, most ? all ? traders usually after gaining sufficient experience ie loosing enough
times/money but continuing to learn, develop sufficient discretion to become profitable
a pro footballer is a poor analogy, golf would be better, more universal — everyone can
learn to draw:
http://www.drawright.com/