Week 4 or 4th of July?Dunno.By the way,russians are awesome.

Okay,now onto the week 4.

So,what can i learn form the link provided?
Yes,not all invention bring innovation.It is simply because some invention has reached its end of innovation cycle and you somehow,cannot do anything about it.Of course the cycle is vicious,but there's nothing you can do about.Or simply to put,sometimes,some invention are utterly useless and of course,it will be rejected.But someday,those useless invention will become useful.Why?Because human technology are always changing from time to time.

Anyway,that's my comment on those link.See you in next post!