[spacemanmatt]

My first kid grew up on carpet, spent a few months between crawling and walking. My second grew up on wood floors, spent a week between crawling and walking, before walking _all_the_time_. Definite eye-opener wrt risk competence.

[euroderf]

Related: my kid was on uncarpeted floors and routinely he took off exactly one sock. Sufficient to get some traction.

[stevekemp]

Our child seemed to jump from shuffling around on his arse (wooden flooring) to walking.

There was never any real stage of "crawling" on hands/knees. Unless it was so brief I missed it.