Imagine that you are 90 years old. You lie in a warm bed, and at any moment the same day may come when you will not be.
In old age, people very often think about life. They think about it almost every day.
They remember who they loved, with whom they communicated, where they felt good. Especially remember about the opportunities that they were once provided, but they were afraid of using them because of fear.
You lie, and suddenly, a time machine appears.
You sit in this time machine, and it brings you here, yes, here, you are now not 90 years old, but as much as you are and you are reading this post.