@tubetime oh, uh. The source is Steve Wozniak https://www.vintagecomputing.com/index.php/archives/2833/why-the-apple-ii-didnt-support-lowercase-letters
But it *would* be accurate to say another way of framing this story is "the machine wozniak was using while making the apple ii was uppercase only, so the apple ii inherited that"
@mcc huh, well there you go, straight from the horse's mouth. he does explain a little bit more--that he could have added lowercase but then he would have needed to fix BASIC, which he had already coded up by hand and couldn't easily redo.