In this episode Scott and I discuss "what you need to know" as a software developer. How many layers of abstraction do you need to understand? How many geek trading cards should you have in your collection? To find out more, we talked to 3 prominent, living-history developers:

• Ward Cunningham - creator of the Wiki and major figure in Agile/XP programming
• Charles Petzold - author of many books about Windows and prominent speaker
• Dan Bricklin - "Superman" according to Scott. Creator of the spreadsheet and all around amazing guy.

Please consider subscribing with iTunes, or Zune. Or if you have a BitTorrent client and would like to help save us bandwidth money, as well as the bragging rights of downloading legal torrents via RSS, get our Torrent Feed at ClearBits.

You can download here - 49 minutes

Most of the music in this podcast is released under Creative Commons, including:

• DJ Cary - Sonic Chiil
• Nine Inch Nails - Ghosts
• John Williams - Dusty Porch

In addition - super short clips of the following songs were used under Fair Use:

• Kraftwerk - Pocket Calculator
• Laurie Anderson - O Superman