This seems to be true for video game consoles. Possibly because good graphics make better ads than short loading times.

Since school children were being used to investigate the dead unicorn it seems that passing it off as a predator worked fairly well.

Have you ever tried to get a group of more than 5 people to keep a secret?

Harry didn't cast the patronus then, it was already active, he just moved it.

I am willing to help.

Have you considered electronic cigarettes?

Amelia Bones learns something at time x is an event happening at time x and information of that event could be taken back to time x - 6. If the information that she gets is from time x + 4 then that information could only go back to time x-2.

I had assumed that Dumbledore had destroyed the remains but posted a guard at the grave in case someone showed up.