It's incredible that you have to explain something so basic about mining to this moron who claims to be so knowledgeable that he posts hundreds of times a day, purely to discredit core, blockstream, segwit, whatever isn't BU. Do yourself a favour and put him on ignore; he feigns some kind of smarts that look like he's creating a counterargument when in fact it's a load of bollocks. He's probably laughing about how he pretends to answer the question while attempting to ridicule real progress, development and intelligent discussion as a shill... or more likely he's just a moron.