Are you familiar with Napster or Bit Torrent which is a form of peer to
peer file sharing? Basically, if I have a file, I can share that file in
a network of computers and everyone will download it from me and have a
copy of that file.
At a high level (not specific
technicalities), Ethereum is similar but we are all sharing an Operating
System like Windows or Mac, and it is constantly being updated and
checked by all the computers within the network. It is so complex that
we can even run programs on it, like payment processor, a chat
application, or even a Facebook.
https://www.quora.com/What-is-Ethereum-in-laymans-term
If Bitcoin is a calculator, then Ethereum is a smartphone, and we haven’t even dreamed of all the possibilities yet.
https://www.quora.com/What-is-Ethereum-in-laymans-term
i know why bitcoin goes up and down---it's because it leads the way as a payment system in Europe. Many fine establishments accept it as payment in full.---The more establishments, the more daily transactions, and more value to bitcoin holders----
now, ethereum on the other hand, handles payments, and i guess is apps driven, as well----
so, ethereum facebook, ethereum i-tunes, ethereum google, ethereum twitter, ethereum slope plus charts (which is free)----it could get HUGE!