Another form of the chemical, monomethyl hydrazine, fueled the shuttle's maneuvering systems while it was in space, said Randy Azera, a former NASA engineer and consultant to CNN.

CNN: Four compounds from shuttle can harm on contact

"When you are the first one to get hold of a new gadget, it's important that people around you already know a little bit about the product and can recognize it, " said Toshiyuki Ueno, an engineer and technology consultant, who got an iPad last month in the U.S. and has a reservation to buy a 3G version in Japan.

WSJ: Japan's iPad Frenzy Signals a Sea Change

Find yourself a hard-core engineer, either in your company, or maybe a consultant, and ask not what is good about Windows 8, but what is bad.

FORBES: Has Windows 8 Failed As The PC Market Hasn't Boomed?