Draft ahead! This is just an idea of a post. Posting ideas helps me to prioritize them better. Your page view has been counted, thank you!

E.g. let’s take last X years and simulate someone investing while knowing what will happen in the future (i.e. just maximize investment returns over a given period taking into account future data). I am mostly curious how larger the outcome will be compared to ETFs. This would give an upper bound for market timing and so on and if the upper bound is not that large (I doubt this though), then this could be another argument for passive investing.