Should you buy double on DCA when Bitcoin crashes?

What counted as a pass (decided before we looked): The double plan had to end ahead in 60% or more of start weeks, with a median gain of 3% or more, after 4, 6, 8 and 10 years, and also in runs starting 2011-2016 and from 2017 on

Result: Saving cash for crashes ended behind steady buying in most runs: ahead in only 34% of 588 four-year runs (a median 2.6% less), 36% of 484 six-year runs (3.7% less), 17% of 380 eight-year runs (4.6% less) and 0% of 276 ten-year runs (6.3% less). Runs starting from 2017 were ahead more often (65%, 85% and 65% at 4, 6 and 8 years), but only by 0.8-1.4% at the median. Runs starting 2011-2016 were never ahead (6.3-6.6% less): the saved cash missed Bitcoin's big rises. Extra money added during deep falls (not saved up: $50 a normal week, $100 a deep-fall week) did better per dollar: a median 8-10% more over 4-10 years