99% of the code has been in testing for a long time. Also the guy leading Segwit2x, Jeff Garzik, is a pro with a ton of opensource experience. You probably ru

99% of the code has been in testing for a long time. Also the guy leading Segwit2x, Jeff Garzik, is a pro with a ton of opensource experience. You probably run his code on your Linux box and don't even realize it. He wrote rngd for example.