AI.js

const brain = require('brain.js');

var net = new brain.NeuralNetwork();

let ops = [
    { input: [.7], output: [.5] },
    { input: [.71], output: [.5] },
    { input: [.708], output: [.5] },
    { input: [.704], output: [.53] },
    { input: [.708], output: [.53] },
    { input: [.68], output: [.55] },
    { input: [.58], output: [.46] },
    { input: [.7], output: [.5] },
]

for (let i = 0; i < 30000; i += 1) {
    ops.push({ input: [getRandomArbitrary(0.65, 0.75)], output: [getRandomArbitrary(0.48, 0.59)] })
}

function getRandomArbitrary(min, max) {
    return Math.random() * (max - min) + min;
}

net.train(ops, { log: true, errorThresh: 0.0001,  iterations: 50});
console.log(net.run([.62]));  // 3.1 miles -- 30.6 minutes