No, Joe, it’s the “cc the world” part, followed by Reply All responses, that creates the blast.

I learned on my Dad’s ancient Royal portable typewriter, which had been customized for a translator with diacritics for languages other than English in some very strange places. As a teenage Navy radio operator, I used a Korean War-vintage Teletype machine that probably had the same three rows of keys, and a shift key that alternated between letters and symbols. We had to type messages comprising long strings of coded address instructions followed by (so help me) five-character code groups that looked completely random to us. Required speed was at least 35 words per minute, and only two mistakes were permitted in any message. The Navy was hard-core.

I can type like the wind on a modern computer keyboard, but I never learned to integrate that top row (numbers) of a standard QWERTY keyboard.