This question already has an answer here:

Does everyone have to run all the contracts or can nodes pick and choose what contracts they want to run?

I'm still trying to wrap my head around how many nodes need to run a contract before I can reasonably know it'll go through.

merged by eth May 20 '16 at 20:18

This question was merged with Does every node execute the contract code for each transaction? because it is an exact duplicate of that question.

Browse other questions tagged or ask your own question.