I had a similar experience back in the early 2000's. I was working with a senior developer who was having trouble moving something up on the the page when some

I had a similar experience back in the early 2000's. I was working with a senior developer who was having trouble moving something up on the the page when something else disappeared. He was using asp.net server controls, it was all he knew. I suggested "just wrap the content you need to hide in a div and style it with display: none, your content will automatically float up" He answered me with a sort of superior sneer: "I'm a .net web developer, I don't know what a div is, and I don't intend to learn it". To be fair, that was a different time and MS was trying hard to make web development act like VB desktop development, but still... The moment sticks out to me.