Besides a long discussion of the influence of psychedelics on technology, Kottke also talks about Wozniak's hardware genius and Jobs's flair for design, which was starting to develop when he was working on the Apple I. Kottke says,
It was brilliant of Steve to find Rod Holt to make a switching power supply, which was a lightweight power supply with no big heavy transformers, and to put the plastic case on it.
So you could actually take the Apple ][ under your arm and carry it somewhere. We never really advertised that but it was part of the appeal. And Steve never forgot that.
You can read more about Kottke and his early Apple adventures in the Boing Boing interview.