Wishing, like sipping a glass of punch, or pulling aside a bearskin rug in order to access a hidden trapdoor in the floor, is merely a quiet way to spend one's time before the candles are extinguished on one's birthday cake.
Science gains from it [the pendulum] more than one can expect. With its huge dimensions, the apparatus presents qualities that one would try in vain to communicate by constructing it on a small [scale], no matter how carefully. Already the regularity of its motion promises the most conclusive results. One collects numbers that, compared with the predictions of theory, permit one to appreciate how far the true pendulum approximates or differs from the abstract system called 'the simple pendulum'.