Are we sure they're good design principles? Have they been used to design and build something successful? I think that's the source of consternation: he preac

Are we sure they're good design principles? Have they been used to design and build something successful? I think that's the source of consternation: he preaches, and has religious fervor, but what has his principle set built (even if it's not him doing the building!)? I honestly don't know the answer there...but it's definitely not obvious. It frames his arguments are 'just trust me', which rubs a lot of people wrong.