"Every mathematician wants to discover a mathematician's lemma."

It might have been easy to guess, but you didn't really think of it in the past 51 years since the Commodore 128 was introduced, did you?

The C128 was introduced in January 1985 at the CES in Las Vegas, so 41 year. Read your post and thought, "I am not that old!"

I went from a VIC20 to C64 then to a C128D in 1987. Then moved a 486DX50 running OS/2 in 1990.