Our greatest accomplishment

[Nebulous]

What, in your opinion, is the greatest thing humanity has ever accomplished (technology wise)?

 

[DrLeftover]

This:

http://www.youtube.com/watch?v=DCMZZRTbR-Q

November 20 2012 Update: We've also updated the kit to include a free "Useless" PCB to make the switch wiring goof-proof, without raising the cost of the kit!

We're also doing something useful with the Useless box! We've made a donation of a percentage of sales of the Useless Box to Plan Canada to sponsor the construction of a school well, school garden, 2 sets of classroom supplies and a lunch kitchen program. Further to that, we will be continuing donating $0.50 from each Useless Box to this Charity until at least December 31st.

Oct 12 2011 Update: Now comes with proper nickel-plated hinges!
Made some minor tweaks to our Useless machine bundle to fit the new switches.

Order from:
https://solarbotics.com/product/60005/

 

[Evil Eye]

Well, there's fire, electricity and the wheel, for starters.

But I'm rather fond of the programmable computer.

 

[Jazzy]

Electricity

 

[DrLeftover]

After a couple of more answers, I'll explain mine.

 

[Worm]

Circuit Boards. Everything nowadays runs on one for the most part. I they had not been made i wonder how life would be like. Would half of the technology now even exist? it would be interesting to find out to me atleast.