Ixoid

find the poorest 50% of the earth's population. determine their collective wealth <

So this subset holds half of all wealth on the planet, according to the OP headline phrasing.

stop when you reach a collective wealth three times that of what you found for the poorest 50% <

So we're up to 50% poor people + 150% ultra-wealthy = 200% of humanity's wealth...

Headline specifically mentions "poorest half of humanity", not "half of humanity"

Sorry to nitpick, but can someone pls explain how a specific subset of people collectively hold 3x(50% of humanities' wealth) - that totals 200% of a finite amount?