lifo replaces takeout menus. rolodex. this used to sit on my desk and also eliminates snail mail.d in if you wanted that thing called stereo. ♪ as low was $129 that is $1,000 in today's money. a smart phone essentially replaces everything in this advertisement and that cost more than $5000 and even that was an improvement things too rapid creative destruction of the music industry's. , the stereo replace the gramophone and cassette players. boombox is. smaller boom boxes been a much smaller box. >> most people just see the empty box but somebody saw something quite different. ♪ the only cassette player as small as the cassette case. john: the walkman was replaced by the mp3 like the i pied then it is all in my phone for a few hundred dollars her is a bargain in replaces the old typewriter and this was eliminated by a great new invention it dances across the paper at incredible speed. john: a great invention is is:most of what it did i could do now by talking into my telephone. it replaces to recorders even my old photo albums are not necessary. when pitchers are in here. dvd is. v