Single most important piece of gear a climber owns in 2024 is what?

Helmet, rope, harness, shoes? Has it changed over time?

Guidebook. Duh  ;)

A rope gun

Automobile.

Except in a few special places, or for the highly motivated, climbing is a motor sport.

My climbing life would be pretty different without good free shoes or a helmet or much of my whats-its and gizmos, but I could make do with swami belts and leg loops and hip belays or munters, but I absolutely would not lead on a static rope like the old days. 

The only other thing I can think of that comes close is bolts, but a good, reliable dynamic rope matters a lot more than that-- we could make do with pegs in drilled pockets if necessary and have some old timey sport climbing. Maybe it would be part of climbing ethics to give all the pegs a good whack on your way down or something. =) 

chalk!!!!!!!!!!!!!!!!!!!!!!

I am gonna second cars, at least in the US

First you must define "Important." Important for what; Safety, climbing performance, ease of access, something else?

What a silly question...

Belay pistol

Gear is aid

a youthful exuberance and joy of participating in the vertical world?

A premium subscription to Kaya to access to the newest exclusive soft boulders in your area with terabytes of beta videos to completely erase your imagination and problem solving abilities!

If you are <35 y/o, apparently a social media account. Yes, that is definitely a change over time.

Instagram account.

Ross Swansonwrote:

Helmet, rope, harness, shoes? Has it changed over time?

A brain.

Common sense .
But as the saying goes “ Common sense is actually not that common.”

Also plenty of folks have a “brain” but still find a way to mess up.

rescue whistle

A plane (of course)

Restraint

John Clarkwrote:

I am gonna second cars, at least in the US

There's a bus that goes from Denver to Rifle these days. I hate for dirt bag climbers to have to mix in with the lower class, but it's an option. 

May even see me on it