Just now when I searching sth in google,I found at the upper right zone of the homepage,a new link to google notebook appeared(use javascript).Once you click it,google notebook will loading out in several seconds,then you can edit anyting anytime.But the next time I return to the homepage,this function disappeared.Why?What a pity I didn't capture a screenshot!
If you search "1/0" in google,you'll find a site.I like these words in this site:

"1/0" is a paradox; in a way that "0/1" is not. Nothing can be divided by zero. If one approaches the formula from the positive side, it would appear that the answer is an infinite positive value. If one approaches the formula from the negative side, the opposite is true. Thus, anything divided by zero is simultaneously positive and negative infinity. "One over Zero" is a paradox in another way too, in a way that transcends mere arithmetic. One is something, and Zero is nothing. The fact that the universe holds something over nothing, that it prefers to exist, rather than not exist, is fundamentally absurd. No being can ever come to deserve its own birth. 1/0 is a cry out against mere logic and efficiency. Stuff exists. All existence, all truth, cannot be ultimately justified: it can only be described, explained, and enjoyed.
1/0 is illogical. 1/0 is irrational. 1/0 is impossible. 1/0 is transcendentally unfair.1/0 is true. Deal with it.

The answer to life,the universe and everything is 42,one day in heaven is 1000 years in our world,google tells me today,how interesting~~