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The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.
We're not in the junk business. We're not in the business of making a lot of products. We're in the business of making great products.
Confidence isn't optimism or pessimism, and it's not a character attribute. It's the expectation of a positive outcome.