The generation of random numbers has many uses (mostly in statistics, for random sampling, and simulation). Before modern computing, researchers requiring random numbers would either generate them through various means (dice, cards, roulette wheels, etc.) or use existing random number tables.
Yawning, swallowing or chewing helps open the small canal (Eustachian tube) which connects your middle ear in the inner side of the ear drum, and equalizes the pressure with the outer side and causes the sensation of ears popping when swallowing.
(ETD; Barotitis Media; Barotrauma; Ear Popping; Pressure-related ... To deal with ear clogging, discomfort, or pain, you can try ... Swallowing, yawning, or chewing gum to relieve the pressure; Clearing your ears by breathing in and then gently breathing out while holding your nostrils ...