This is getting off topic, so I won't post again on this subject, but in
response to this post:

"learned from my PT that crawling is a necessary developmental milestone
which allows for coordination between opposite sides of the body."

This is a common belief of physical therapists (and others) in the United
States -- but it is (merely) a cultural belief, not scientific fact.
Children in cultures where crawling does not occur grow up just fine, with
no coordination problems between opposite sides of the body.

Back in the mid-1980s, there was even one person from an institute in
Philadelphia who said that if you didn't crawl, you wouldn't learn to read
-- again, people in Mali have no problem reading.  In fact, many of them
learn to read Arabic at Koranic school, and then learn to read French and
Bambara in public school.  Many of them learn to read English as well.

Kathy Dettwyler
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