June and July cost the accounts 28 to 29 percent. Here is why that fall came from the old, ungated version of the strategy, what replaced it on all three accounts, and what the same five weeks look like under the new rules.
Why optimizing one variable in a nonlinear system quietly breaks it — the dating site that A/B-tested itself into a slower funnel, and what that means for anyone tuning a system.
Why I'm starting this blog and how I combine social trading with macro analysis.
A systematic trader with 25 years of experience explains why removing himself from the decision loop was the hardest — and most profitable — engineering problem he ever solved.
