A million fingers going in all directions to sense how far everything is away from you and tell what property’s things probably have

Like hearing but with color.

No, seriously, it’s impossible to accurately convey. You can talk about the mechanics, the use cases, what you can do with it, but you cannot convey “how it is”, same as a bat cannot convey “how sonar is”.

Like echolocation on crack

It’s like Sex to me, I’ll never get it