If you could go back in time, what would you invent?
Would it be something useful, like the printing press, or something really useful, like sandwiches?
These 19 people have some good ideas.
via: ShutterstockAs Arthur Dent learned, all you could really be a master at is inventing the sandwich. My god, I would make the best sandwiches. –directorguy
via: ShutterstockReese. The concept of peanut butter didn't come up until quite late, and the idea of pairing it with chocolate is one of the great scientific advances of our time. Them caananites and sumarians would be blown away. I'm pretty sure I'd end up king. –TaserLord
via: ShutterstockPenicillin. Basic hygiene. Printing press and movable type. Steam engine. Ironic bit. If time-traveler discovered penicillin 2000 years ago, it probably wouldn't work today..evolution of antibiotic-resistance and such. –jade_crayon
via: ShutterstockKnitting, which needs much less equipment than weaving. So fabric, rugs, clothing, etc would be less of a chore to make. –smilebreathe
via: ShutterstockDeodorant... just imagine how smelly it was back then. Yes, sir... this is perfume for your armpits.. –atticuslodius
The concept of secularism. Hopefully, when I get back to the present the influence of religion throughout history will be greatly reduced and I'll come back to a world that is way more advanced in terms of technology and science and social progress and individual liberty. –winterfresh515
via: ShutterstockAviation stuff. Easily make hot air balloons. Knowledge of engines means I can use even the metallurgists of the time to build an engine and replicate the wright flyer. If that fails I can just rule the world by inventing a superior siege engine capable of launching a 90kg object over 300 meters. –skiman13579
via: ShutterstockIf I had the materials I could probably do some stuff with electricity. It's pretty simple to make a generator/motor, not really sure how batteries work though. –pleezusjeezus
via: ShutterstockUm... Very basic first aid techniques? Other than that, all I can think of is jump ropes and hula hoops. Not very useful. –acorngirl
via: ShutterstockI would make/improve water wheels to power things. Forges to skip past the stone ange into the copper, fly past bronze, fly past iron, and get into the steel age. Mining and finding the materials would be, hardest. I think I could make a crude black powder. –Haydenr13
via: ShutterstockBasic metallurgical principals (limestone for flux, blast furnace, Bessemer Converter), basic chemical process, gunpowder that doesn't suck (corned powder VS. meal powder), basic sanitation and hygiene, germ theory, optics, a few other things. Hopefully while avoiding being killed for my knowledge –I_Automate
via: Shutterstocksteel, internal combustion engine, optics, celestial navigation, germ theory, Irish Whiskey, fore-and-aft rigging, cocaine, firearms, etc. –robob2700
via: ShutterstockIron smelting and printing press. That s**t alone would change the world for the better. –Mnementh2230
via: ShutterstockThere are so many things I would know how to make...but still be unable to make. Basic plastics, for example. I can bake pretty damn well though. Maybe I could invent worldwide obesity? –naigung
via: ShutterstockA few genres of Music. Although I doubt they would be ready for them yet. –drumanddrummer
via: ShutterstockAn empire built on scamming. I got like 2000 years of scam knowledge, make my money and leave town before they catch on to the snake oil salesman, and then use my money to start the first post office –TuxedoFriday