Our world would be different because without the printing press we would have no books, so school would be different and probably more difficult. Without the printing press we never would have printed bibles so church and any religious studies would be different (and probably more difficult) AND of course we would have no newspapers so there would be less advertising, and nothing to read on Sunday morning.
Answer:
bookshelf
computer software
junk food,tea pot,fire alarm,door bell,food poisoning
air mail,sleeping pill,head office,head word,computer program,door step,book case,
The answer that prevails in most cases is: B. They have a fatal flaw that will ultimately lead to their undoing.