Sing it
There is one PDA I can think of where you can install applications to memory cards with no consequences. Here’s a hint: It starts with “N”, ends with “n”, and has “ewto” in the middle. What a surprise. Add it to the list of things Apple got right 10 years ago that no other vendor has managed since.
Sing it, brother. Steven (the guy that brought you Transmit and Audion) waxes technological about the shortcomings of ‘modern’ PDAs. I really should just up and buy a Newton.