Soooooo......

[Ghoulish Delight]

You used to have to push in a button (that was shaped like a dull razor blade) located just under the plastic collar that supported all of the spring tension of the open umbrella. The moment you depressed it enough for the umbrella to close, the entire force of that spring tension would be released, pinching your thumb between that stupid button and the plastic collar.

These days, instead of the tension being held by the spring loaded button on the shaft, everything is internal to the plastic collar and all you have to do is pull down on the plastic collar to close. No button, no sudden release of tension, no pinching.