What machine or technology has made the biggest difference in the world?

[marval]

Yes Thomas Crapper who invented the toilet must have been flushed with success.

 

[Corno Dolce]

Oh Wow GrandDame Margaret...you really hit a home-run with that :lol::lol::lol::lol::lol::lol::lol:

 

[Tûrwethiel]

No one's thought to mention hair-dryers.

Ducks hastily thrown toilets, CAT scanners and dynamos and heads for another thread.

 

[sunwaiter]

i hope i won't sound too patriotic if i mention the Lumière brothers.