Here's a hot new invention: The TV B-Gone. It's a small device you put on your keychain and when you press a button on it, it turns off every television set in the room.
Almost immediately, someone came up with — and is now selling on eBay — the TV B-Gone Scrambler Device, which prevents the TV B-Gone from working.
And you just know someone is now working on a device to block the scrambler, while some visionary is starting on a device to scramble the blocker that blocks the scrambler. This is known as Progress.