Timeliness is the key.
How do you latch onto timeless ideas?
- You can read books by futurists, books that scout future trends.
- You can also look at publications by major world development agencies, such as the world health organization. Such groups publish lists of the coming century's greatest emerging problems, such as antibiotic resistance, or water wars. Such problems are inherently dramatic, and the kooky ways in which humanity handles and creates such problems are inherently comedic.
- And you can read the Bible.
The events prophesied in the Bible are guaranteed to happen, and the dramatic events of Bible stories are the basic elements of drama, which will never go out of style, and are always current.