Quantum-computing researchers have actually managed to build one of their fabled devices (though it had only three qubits), and have worked out the mathematics that would allow a bigger machine to solve hitherto hard problems in cryptography.

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Many of these problems are hard to solve.

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And talking straight to the American people about how we're going to solve these problems, and putting in the hard work of negotiations to get stuff done.

CNN: Transcript of Thursday's Democratic presidential debate

Instead of partying with their entrepreneurs, investors should be pushing them as hard as possible and helping them solve their toughest problems, Khosla said.

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What's hard is to figure out how to solve these problems.

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People who are working hard to fill a need and solve the biggest problems are often compensated in the biggest ways, not just in financial terms, but also in terms of human satisfaction.

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Part of their vision is to focus on really hard problems and find technologies that when integrated could solve them.

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The hard-working smart folks at brands have been busy trying to solve these problems, usually being forced to piece together research that has never met, never mind have terms of agreement.

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So why do liberals work so hard to create the perception that "taxing the rich" will solve our problems even though the top 10% of taxpayers already pay 70% of all federal income taxes and many low-income Americans pay no federal taxes at all?

CNN: Why America needs a tax reformation