[delinka]

Zero? Most glass windows are rectangular; digital windows are generally rectangular. Your view of the outside world is permitted by the glass window; your view of your application is permitted by the digital window.

[SixSigma]

your use of the words "most" and "generally" already cause problems.

Xeyes is not rectangular, Portholes are round. The window on my boiler permits views inside the boiler etc. etc.

[delinka]

I'm not sure why these words cause problems. Refuting the "zero" number does not require absolutes in the opposite direction.