There are many things I've tried, but haven't tried yet hoping to try it sometime later. I started to wonder there are some things I would never try at all. It's because I've lost interest or it's not necessary to try at all.

Studying of Voxel won't happen to me again. I wonder Voxel is still hot topic.

Reexamining Charles Babbage's Difference Machine won't be done by me again.

Chuck Hoberman's transformations with unfolding structures which collapse and expand.

(October 16, 2002)