Do you know what a ‘typo’ is?
Yes, and claiming he made such doesn't really address the question. The mistake is not a "Typo" it is a mistake of actual "fact", one of several.
His answer is not very satisfactory, but it is what it is. I don't write for other people. If I did, their answers would make a lot more sense. :)
I think he uses the word "typo" because he didn't want to come out and admit it was an actual mistake of fact. I am reminded of an old joke about an American Officer Stationed in Japan.
.
The American officer had typed up a report and given it to a Japanese liaison officer. The Japanese officer brought it back and showed him a misspelled word. The American officer looked at it and said "Oh, a "typo."
The Japanese Officer looked at him and said " What mean this word "typo"?
The American officer responded, "Sometimes when you are typing you hit one key instead of another and the word comes out misspelled. In America we call this a "typo."
To Which the Japanese officer responded: "In Japan, we call this MISTAKE!"
.
Some people don't like to admit they made a "mistake."