Making a case for letter case
John Saito

I think it’s reasonable to say that short headings in all caps (with Apple’s reasonable exceptions duly noted and applied) are more immediately LEGIBLE than those rendered in lower case; READABILITY is quite another story!

‘Running’ text is better in L/C (sentence caps), providing a more even colour. This is from a sometime print designer …

Consistency is vital—that’s what style guides are for!