Hmm if this is similar to the hitchhiker’s paradoxon, then one would expect to wait 5 min for the next block by intuition, which is wrong and we have to wait 10

Hmm if this is similar to the hitchhiker’s paradoxon, then one would expect to wait 5 min for the next block by intuition, which is wrong and we have to wait 10 minutes. But i do not get why the intuition should be wrong by a factor of 4x (20 mins) instead by a factor of 2x (10 mins).