[Suvash]

sometime ago i was talking to a friend of mine...he was studying BSc and was much interested in science especially physics and maths... so needless to say we were talking about science... he was saying this and that which just flew over my head....... and he knew that but still he was trying to prove his knowledge...
and as a flash, a question struck me and i asked him.... so, then after you have told me so much about different inventions...... what do you think we still have to invent? i mean we have fans, tv, telephone, refrigerator, computers and many more? so what is there left to be invented which is completely new and not a revised version of what we already have?

and he went blank...
so i think it would be a nice topic to discuss...

What is left for us to invent?