Random strings

This is just a string of random, but inter-related, thoughts that made their way in and out of the varied grey dunes of the brain...

A young gum chewing smartie was arguing with an intently listening aged man in the bus. The younger one was saying that there is nothing left for the new generation to invent because everything that could have been invented is already out there. So, the younger generation can just stay laid back and not do anything at all. The experienced man countered this by saying that if every generation thought like that there would never had been the airplane or sliced bread or the chewing gum or even orange juice. Somebody out there tried squeezing out the juice of the orange and figured out that it was tasty. What about cow juice? Some guy must have thought one morning that I should squeeze those things under the cow's belly and drink whatever comes out of it. The accidental success would have got everyone around to try the same with different things. Someone might have rubbished the claim stating that his bull could squeeze out only a cupful and it did not taste good. Or worse, someone might have got killed when the elephant sat down on him/ her during the trial. Who knows! I know a nerd who could spoil the fun by giving me a logical repartee saying that the cow's milk was invented by the calf sucking on it mother's udder.

So what could be possible inventions? My shot to some possibilities...

• A wall that can change its colour or its scene like a desktop wallpaper... a big digital photoframe?
• A device that stores all the energy created by the rotating wheels of a car and then use it to fuel the car itself... after all isn't water used to rotate the turbines, which in turn convert mechanical energy to electricity?
• An optical lens that automatically changes its refractive index depending on the vision of the user... how does auto-focus in a digital camera work?
• An inoculation for common cold
• A formal shoe that does not crease in 2 days... at my last visit to a shoe shop, the salesman was selling me dryme leather shoes that look the same throughout its life; mainly because they look old when they are new.
• A small locket that acts as a translator and transmits the wearer's speech into a pre-set language... a speech to text converter > language translation tool > text to speech converter?
• A theatre that allows the viewer to select the actors on-the-fly while buying the tickets to the movie... when they can make Beowulf, why not!

Yea, why not?!