I am 5'1" and I have
always had a tuff time judging heights -- from anything like how high is a ceiling in a house, or how high is that diving board, to how tall is someone who is taller than I am (a goodly number of folks).
Fran (IIRC) also mentioned that she was short & had the same problem. I don't know why that is, but is is indeed a problem with perspective or relativity or, at least in my case, nearly always looking down, so your frame of reference is different -- another anomaly I can't explain.
Anyhoo, that's the way it is for many of us "short people..."
or, as Randy Newman put it:
"Short people got no reason
Short people got no reason
Short people got no reason
To live
They got little hands
Little eyes
They walk around
Tellin' great big lies
They got little noses
And tiny little teeth
They wear platform shoes
On their nasty little feet...
....
They got little baby legs
That stand so low
You got to pick em up
Just to say hello
They got little cars
That go beep, beep, beep
They got little voices
Goin' peep, peep, peep
They got grubby little fingers
And dirty little minds
They're gonna get you every time
Well, I don't want no short people
Don't want no short people
Don't want no short people
'Round here...." *
And although his lyrics are laced with double intendre, this little ditty is still good on its face.
Sorry for getting carried away....
* http://www.sing365.com/music/lyric....randy-newman/3244f1d30051f75e48256a370048b6fa