Analogue (Non-techies may want to clear out)
The definition of analogue computing is the representation of data through varying physical qualities. Digital computing claims to be different, but how much so? Here's the disproof of digital differences to analogue:
1.) Hard drives. The representation of digital data via magnetic anomalies on a metallic rotating disc. How is the movement of paramagnetic matter across metal not a physical quality?
2.) Flash memory. The representation of data via negatively-charged electrons in a copper-directed chip. Again, how is the physical movement of electrons digital, rather than the exact definition of analogue?
3.) Optical memory. The representation of data via tiny scratches and anomalies in a pressed polycarbonate disc read by a laser. Scratching things to represent data...sound familiar, Edison?
And you can see my point. Feel free to comment/argue/give more examples.
-Lane