Solve for X

Elementary 2×2

& Sherlock: Wrong place, wrong time?
    Detective Bell: Well... unless you believe in karma.

& Watson: Hey, I was wondering if it was possible to get an advance on my salary.
    Sherlock: Define “advance”.

& Harlan: The point is, I know what they were working on. It’s P versus NP!
    — .......
    Harlan: Come on, it’s one of the most famous problems in math history!
    Sherlock: Harlan, if we were mathematicians, you would not be here.

& Harlan: In simplest terms, P versus NP asks if every problem whose solution can be quickly verified by a computer can also be quickly solved by a computer. Sounds innocent enough, right? Only it’s not. It is filthy. Some experts have even theorized that it can’t be solved.
    Sherlock: Could it be a motive for murder?
    Harlan: That depends. You think a million dollars could be a motive for murder?

---

& Watson: So, you won’t go for a jog along the river but you will do sit-ups facing a wall at 2:00 a.m....
    Sherlock: ... We remain devoid of a suspect. Calisthenics stimulates the heart, which increases blood flow to the frontal lobe, which stimulates deductive thinking. Also, the river smells like rancid cod.

& Sherlock: I’m an expert on poisons, Watson. I know virtually everything there is to know about them. But I’ve come to learn over the last few years that there is nothing on this planet quite so toxic as guilt.

& Sherlock: You’ve made your mistakes, Watson. So have I. And if there’s anything that’s become apparent during our time together, it’s that the great majority of those mistakes belong firmly in the past. Hmm?

& Watson: You know we’re going in circles here, right?
    Sherlock: We’re in a roundabout. We just need to find the proper exit.

& Watson: I think there are better ways to spend $22,000.
    Sherlock: You could buy 8,800 beers, for example.
    Watson: Mm, tempting.

& Watson: What are you doing?
    Sherlock: I am taking one last look at P versus NP.
    Watson: What do you mean, “last look”?
    Sherlock: The NSA has asked the NYPD to surrender... everything and anything pertaining to the problem, including Tanya Barrett... They claim it’s in the interest of protecting the country against her breakthrough.

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