[jpcosta]

This is fascinating, but at the same time I got to ask. Wouldn't it easier for a person as experienced as Tavis Ormandy to simply write a console version of a spreadsheet software from scratch using a modern stack?

[bombcar]

Yes and no - 1-2-3 is an extensively advanced piece of software that took thousands of man hours to get where it was.

You could write 20% of it in a few days, maybe 50% in a month, but that last bit would take … thousands of man hours.

[yazantapuz]

Yes, but the result won't be as polished as 1-2-3 or QP, both of which have tons of developer time behind).