[pjmlp]

1. Magazines with tapes, floppies, CDs, DVDs

2. BASIC, Logo, Hypercard, ...

3. Fail to see the difference

4. POSIX only covers a tiny bit of OS portability and even POSIX leaves the little bit it covers with lots of vendor specific behaviors

5. You can install any Mac app on any Mac, any Amiga app on any Amiga, any PC app on any PC, ...

[bane]

6. The 8-bit microcomputer madness. How many pieces of software were ported to half a dozen or more platforms?