Hacker Cinema
The Harder They Come
1972 · Film · 103 min
Directed by Perry Henzell
Ivanhoe Martin arrives in Kingston, Jamaica, looking for work and, after some initial struggles, lands a recording contract as a reggae singer. He records his first song, "The Harder They Come," but after a bitter dispute with a manipulative producer named Hilton, soon finds himself resorting to petty crime in order to pay the bills. He deals marijuana, kills some abusive cops and earns local folk hero status. Meanwhile, his record is topping the charts.
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In grad school around 1980 I took a cab home from a midnight showing of the reggae film "The Harder They Come". The cab driver asked me out of the blue, "Is it true you can't tell the difference between +i and -i?"
Cambridge, MA but still ... unexpected.
If someone hands you a blank board representing the complex numbers, and offers to tell you either the sum or the product of any two places you put your fingers, you can work out most of the board rather quickly. There remains which way to flip the board, which way is up? +i and -i both square to -1.
This symmetry is the camel's nose under the tent of Galois theory, described in 1831 by Évariste Galois before he died in a duel at age twenty. This is one of the most amazing confluences of ideas in mathematics. It for example explains why we have the quadratic formula, and formulas solving degree 3 and 4 polynomials, but no general formula for degree 5. The symmetry of the complex plane is a toggle switch which corresponds to a square root. The symmetries of degree 3 and 4 polynomials are more involved, but can all be again translated to various square roots, cube roots... Degree 5 can exhibit an alien group of symmetries that defies such a translation.
The Greeks couldn't trisect an angle using a ruler and compass. Turns out the quantity they needed exists, but couldn't be described in their notation.
Integrating a bell curve from statistics doesn't have a closed form in the notation we study in calculus, but the function exists. Statisticians just said "oh, that function" and gave it a new name.
Roots of a degree 5 polynomial exist, but again can't be described in the primitive notation of square roots, cube roots... One needs to make peace with the new "simple group" that Galois found.
This is arguably the most mind blowing thing one learns in an undergraduate math education.
Ah The Harder They Come was such a sick film, though regrettably one of the only Caribbean films I’ve seen. Anyone have recs?
The subtitles made me roar with laughter when I first saw Jimmy Cliff's The Harder They Come. The whole movie is in Jamaican patois, so there's some logic in translating it; but most urbanites here have plenty of exposure to Jamaican patois, so it's a bit like having English subtitles on an English movie.