The argument here is basically the "Doomsday argument" seen elsewhere except applied to to time instead of population. If you do this argument but say that we'r

The argument here is basically the "Doomsday argument" seen elsewhere except applied to to time instead of population. If you do this argument but say that we're likely in the middle 95% of the total human population, then your complaint will go away. However, that doesn't give you time estimates, so it's maybe not as intuitive a result as the one in this article.