Radio Buttons are better than Combo Box.

My User Interface Professor said "Radio Button is better than Combo box control." But I still doubt whether it is or not. Because radio buttons spend more space.

Today I found a good example, that radio is better.

This is the ORIGINAL Combo box control.If I click the combo box, thenBut the next version of this program, Xcod in Mac OS, has improved the user interface, using Radio buttons, instead of the Combo box.

It is true radio buttons take more space, but I think we can also make it not wasting of space. The space the radio buttons take can give a kind of more information.

In addition, radio buttons reduce the user's mistakes, as my professor said.

*PS: for fun.