No, "this" and "that" are both pronouns. You need to study your use-mention distinction, son.

By my calculations, I have something like a 0.119063482% chance of winning one of these. Making my expected gain from these comments around 71 cents. Which would have been worth it if I hadn't spent the time to make those calculations.

This is a comment.

I wish everyday was your birthday.

I'd cut and paste my comment from the other post but, really, why bother. I think I've earned my tickets already.

Four years old and already giving out plane tickets. How precocious.

Gimme gimme.

I would like to have this TV.

And frankly, I want their houses. So if people hanging out in front of their view to the ocean makes them sad, they should just look around at the house they still own and remind themselves of the benefits of living in a society that's governed by laws rather than wants.

Hmm, it looks like if your target is 200 ft away and your beam is even one degree off perpendicular to the surface of the glass, your laser and your detector will have to be roughly 7 feet apart. So if you want to use this from "hundreds of feet away", it'll be really inconvenient unless you're damn close to perpendicular.

And now it occurs to me that there's kind of a rock and a hard place thing going on here: for this to be convenient, you want to be very close to perpendicular but the reflection will be stronger the farther from perpendicular you are. Hmm...