Systematic vs Discretionary

Every loss is easier to blame on "I should have known" than "my process failed." That confusion is why most retail traders never improve.

Systematic

• Every entry, exit, and size is decided by rules written down in advance.
• Backtestable, measurable, boring on purpose.
• Weakness: rules can't react to context they weren't designed for.

Discretionary

• Human judgment on each trade, guided by principles but not rules.
• Can adapt to regime shifts fast.
• Weakness: emotional drift, revenge trades, no clean way to measure the edge.

The honest answer

Most professional traders are hybrid: a systematic core (scanner + rules-based entry) with discretionary overrides on regime and sizing. The mistake retail makes is flipping between the two mid-week — which is neither.

Pick one to run for 90 days. Journal every trade. Then decide.