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.
Could very tight neck muscles cause your jaw to go into spasm and affect ears? Tight Jaws Affect : Yes, tight neck muscle can translate into tight jaws, via muscle spasm. Jaw muscle spasm may cause ringing in the ears, popping in the ears, and earaches.