"point at" vs "point in"

[Nessie]

Hi,
Does "point at" and "point to" mean the same?

Many thanks
Nessie.
_________________
... something we never have again, I know... I guess I really really know..

Sorry seems to be the hardest word...

[Nessie]

Here is what I find in the Longman Dictionary:

point at
　I could see him pointing at me and telling the other guests what I had said.
point to/towards
　She was pointing to a small boat that was approaching the shore.

=> so does it mean we use "at" for people and "to" for things"?
_________________
... something we never have again, I know... I guess I really really know..

Sorry seems to be the hardest word...