Replies to post #321 on exp system

[exp]

Mechanical systems are too simplistic in most cases:
(1) There are multiple factors that need to considered in trading decisions with appropriate dynamic weightings.
(2) Markets change over time so systems based on data mining over a restricted time period are of limited reliability.
(3) Position sizing may not be considered in many mechanical systems.
(4) Diversification may not be considered in many mechanical systems.