Three wrong assumptions

Did some blog reading today, and found out several assumptions I had which were wrong:

• Assumption: "Protected Internal" means both protected and internal
  Wrong: It means Protected OR Internal.


• Assumption: 32bit Windows is limited to 2/4gb ram
  Wrong: It's limited to 2gb of ram per application.


• Assumption: OpenFileDialog is harmless
  Wrong: It loads a mini-explorer, including all the extensions you have installed.