I think the wording is a bit confusing, because the reading isn't the second payment, the time it takes is the second payment. You are paying the time it takes to do the thing in order to get the enjoyment of reading.
However, I still find this a strange analogy... time is not like money, you can't save it... that time spent reading the book was going to go away whether you read the book or not. You can't save up that time to spend it on something better later.
> time is not like money, you can't save it... that time spent reading the book was going to go away whether you read the book or not. You can't save up that time to spend it on something better later.
Time is not money, but it is opportunity cost.
Time allocated to X is time you have lost the ability to allocate to Y.
However, I still find this a strange analogy... time is not like money, you can't save it... that time spent reading the book was going to go away whether you read the book or not. You can't save up that time to spend it on something better later.