This is our invention. Add your opinions to it. Then we’ll all bask in its glow.

• THE VERY BEST ACCIDENTAL DISCOVERIES AND INVENTIONS

Glass
Slinky
Post-It Notes
Aspirin
Rubber
Penicillin
Frisbee
Brandy
X-Rays

• THE VERY WORST ACCIDENTAL DISCOVERIES AND INVENTIONS

Columbus discovers what he thinks is India. That’s why Native Americans are called “indians.”

Thalidomide creates birth defects when given to pregnant women, then researchers stumble on the fact that it helps mitigate the effects of leprosy. That’s a long way around, if you ask us.