> When I was a kid, my parents were very young and could only afford a second-hand Texas Instruments calculator which was missing the 'X' button. Times were hard.
I would normally use "this is why" at the beginning of a sentence.
It's not a conjunction.
> When I was a kid, my parents were very young and could only afford a second-hand Texas Instruments calculator which was missing the 'X' button. Times were hard.
@M.A.R. Hm, I don't know... Normally I'd vote BS, but I sensed a difference in the direction they're describing (without having read the description first). It's probably some kind of... not-very-widely-applicable rule.
I think I'm just "sensing" the usual this vs. that thing, though.
Like, the usual reply to a Why do... blah blah? question is Blah blah, that's why., not Blah blah, this is why.
I can imagine either word used in the original sentences, but the emphasis changes slightly, at least for me.