Question is really can you pay or receive a fraction of a satoshi?
In off-chain systems, you can split the satoshi into as many pieces as you like.
This. Although you're either on the chain or your'e off of it
http://www.goodreads.com/quotes/490538-you-re-either-on-the-bus-or-off-the-busI remember one of Bitcoin's selling points in the early days was that the decimal point could be moved and/or decimal places added to accommodate massive adoption, although this could have just been the developer's subconscious saying "MOON!"