[Torie]

Any scientist in most fields will amaze you with a rendition of what is known to be unknown in his or her discipline. What do you think electricity really is, and why it has the properties it does? What do you think causes gravity to be a force? What about matter really generates it, and why? Why does molten matter generate magnetic fields? Just why do the magnetic fields flip from time to time? Why is the ocean salty? How many species of life do you think on on this planet? Is it more likely to be 2 million, or closer to 200 hundred million? What do you think is "known" about that?

[SierraWasp]

"What do you think is "known" about that?"

"Fascinating!" God only knows!!!

[stylin_geek]

How about the fact that an electron has a mass approaching zero (for all practical purposes it is zero, but due to limitations in the equipment used to measure such things it still shows some mass) yet has "spin?"