Squibs-genetics gone wrong or (more & long)

[Kaisenji]

No: HPFGUIDX 75624

...the usual "hiccups" in nature's creatures.

I've been thinking about squibs of late and what roll they have in the
wizarding world.  Obviously, squibs are the "invisible people"; that
is nobody talks much about them because they feel sorry or embarressed
by their very existance. The Minstery of Magic (shame on them) don't
even keep records on squibs and the families they come from. Such is
the case in a family of healthy regular people have that one family
member who may have a mental or physical disability thus tainting the
family genetics. (not slamming disabled people but using as an
example; most families do not treat a disabled member like an outcast
this is to say however that it does not happen.)

But, how true is that?  Something about Ms. Figg's actions that night
the dementors attacked Harry and Dudley had me asking myself "Now how
the heck did she know they where there?" She saw them. Maybe.  She had
stated she felt the dementors. Dudley not only felt them but saw them
as well.  I wonder though...how many other people in houses nearby
felt them too? I'd love to know this!  The connection both Dudley and
Ms. Figg to the wizarding world and the dementors is that both come
from families that have/had a member of the family who active magical
blood in which they share those genes.

So I ask this, how much magic is actually in a person deemed a squib?
 What can they feel things differently than a wizard or witch?  Take
Filch for instance? What the heck is he doing at hogwarts when
obviously to us, a wizard of er...lesser talents could also do the job
too but use magic to speed up cleaning accidents.

I dunno what do y'all think?

Kai