When I mention my profession to people, perhaps when I'm at a dinner party or chatting to a taxi driver, one of the most common questions I'm asked is: "what's the best invention you've ever seen?".
I'm always slightly torn about how to answer.
Because it depends on what you mean by "best".
Is it the invention that represents the greatest leap forward? Or the one that solves the biggest problem?
It's entirely possible to have one but not the other.
Protecting conceptually simple inventions can often be less straightforward.
But don't let that stop you seeking protection for them.
"Simple" inventions change the world too.
(P.S. The linked article from the Spectator says we put a man on the moon before we put wheels on suitcases. I don't think that's quite true. But it certainly caught my attention!)
The Romans never invented the stirrup. It took 50 years after the invention of canned food for someone to invent the can opener. And we put a man on the moon before we put wheels on suitcases.