Greatest

[karriegarza]

What do you think was the greatest invention in your lifetime?

[Jomlett]

Reinvention of the Apple!

[weecalf]

The on /off switch on the television .

[Svejk]

answerbank ;o)

[ParsleyDumpling]

Screw caps on wine bottles :)

[silliemillie]

The internet

[flump1]

Medicine .Not an invention as such a discovery, hope it counts !.

[Brinjal]

internet, cell phones and oh yes definitely screw tops on wine bottles. cant choose between them as to which is the greatest probably the screw top.

[Sycamore3House]

The microchip

[brionon]

Not in my life time but the greatest invention ever was the Bicycle.

[brionon]

Brinjal. Good one mate, Hic.

[Canary42]

NHS.

[Baldric]

The Mobile 'phone'

what a great way to stay in touch.

[anneasquith]

facebook LOL.

[shoota]

The centre fire cartridge.

[Svejk]

^whats that then, shoot. whats so good about it?

[shoota]

The centre fire cartridge is the invention that did away with having to stuff your powder and shot down the muzzle of your gun, enabled safe multi shot firearms, more powerful calibres and led to the efficient firearms that we have today.
Where would civilization be if we were still using muzzle loaders?

[shoota]

http://en.wikipedia.org/wiki/Centerfire_ammunition

[shoota]

Although now having read the op properly I see that it was before my lifetime.
Rethinks..........