Re: Efficient Market
"85% of people who sometimes ride bikes also sometimes drive cars"
Maybe you are mis-quoting this? https://www.cyclinguk.org/statistics
"85% of the people aged 18+ who cycled also held a driving licence"
But then the other statistic is wildly different to what you quoted:
"31% of the people who held driving licences also cycled"
Given two sets, C (Cyclists) and D (Drivers)...
C ∩ D is 10% of D ("Only 1 in 10 drivers also cycle")
C ∩ D is 85% of C ("85% of people who sometimes ride bikes also sometimes drive cars")
Therefore, D is ~8.5x more than C ?
Is my maths wrong? Really trying to wrap my head around these statistics