Oops I think I am getting old and daft !
Nah don't believe that. Just one of those typos I could tell you how many times I right my birth year instead of the current year when it's my birthday or the year we got married instead of the current year on our wedding anniversary. Sort of thing that's easy to do, and then you remember when it was 1964 and you wrote 1964 (at least I do, sort of) but hopefully never wrote 1864 in 1864.
If you get me drift.
G U T
There are two ways to be fooled, one is to believe what isn't true, the other is to refuse to believe that which is true.