Thankfully, old people die. No active action required.

And young people become old, gain more life experience and knowledge and change their views.

Too bad for all the people that suffer in the meantime. Said one smart person:

... this long run is a misleading guide to current affairs. In the long run we are all dead. Economists [and everyone else] set themselves too easy, too useless a task, if in tempestuous seasons they can only tell us, that when the storm is long past, the ocean is flat again.