# Gavin Andresen # 2014-10-28 15:53:19 # https://bitcointalk.org/index.php?topic=176684.msg9358289#msg9358289 @s{quotedtext} @s{quotedtext} @p{brk} You seem to have a very narrow definition of "decentralized system." @p{par} In the future I imagine nodes might probabilistically check a random subset of transactions, and broadcast "this transaction is fraudulent" if they find anything wrong. If you imagine a million nodes, each fully validating one-in-ten-thousand transactions then you get each transaction validated on average 100 times. @p{par} That's not so different from your 'treechains' idea (just simpler and easier to reason about, in my humble opinion). @p{par} If you think that hardware costs are going to dominate decentralized-versus-centralized payment network costs, then I think you're wrong. Hardware is cheap, people are expensive. @p{par} But all of this is really arguing angels-dancing-on-the-heads-of-pins; we've got years before we have to worry about how to fund network security, and a whole lot of things to work on before then. @p{brk}