They could have done so much more when they decided to turn a ticking time bomb into a kitchen timer. I think rather than twisting the center people should be able to pull the fuse to set it. And then with each passing minute the fuse would retract a little more until time's up. And then the bomb would brrrrring! and vibrate violently. And then explode.
As it stands this bomb is just a globe with the rudimentary capability of tracking time in 60-minute increments and telling my mama when the apple-plum pie with streusel topping she's making me is done. I guess that's OK too though.