This is so great:
“I think by far my biggest advice is this: If you don’t have classroom experience and are building a product, it’s tempting to think you know exactly what you’re doing because we all went to school, and we think that we know what school is.

But, we don’t know what school is. And we definitely don’t know what teaching is, especially as engineers. So my advice is to over-correct for this and build empathy for actual teachers in actual classrooms—not the theoretical idea you have about what teaching should or could be or was for you. Because that almost certainly is not going to land with educators today.”