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Common mistake

Expecting to be halfway there at the halfway point in time

It sounds like this

“After 20 of the 40 years I'll be about halfway to the final amount.”

Why it’s wrong

Halfway in time is several doublings from the end; the amount only reaches half one doubling time before the end.

The lesson that fixes it

Cognosc spots mistakes like this.

When you explain something in your own words, Cognosc can tell exactly which mistake you’re making — not just that you’re wrong — and gives you a short lesson to fix that one thing.