Prince, at the request of his friend the esteemed physicist professor Harold R. Kaufman, was checking a CSU report for NASA on the suitability of different propellants for use in ion drives, gridded electrostatic ion thrusters, and Hall Effect thrusters.
Prof. Kaufman was interested in comparing charge/mass ratios, specific impulse and cost efficiencies of the different propellant options (such as argon, bismuth, iodine, krypton, and xenon) for a given Wattage of engine power and given wet mass at launch.

Kaufman and Prince immediately agreed that the evidence pointed to xenon as the most efficient propellant, however, with it being so expensive and NASA's budget being so limited, Kaufman was under pressure to recommend switching to a cheaper option.

Prince found himself becoming increasingly frustrated with Kaufman's politically motivated indecision, and increasingly angry on a personal level with his verbose writing style.

After several months of back and forth, and having just worked through 18 pages of weak arguments in favour of argon, indium, and - of all things - *caesium*, Prince reached the end of his tether and dictated his final letter on the subject:
"Use Xe, motherfucker."
( brb Monkhouse Stampede, Sat 28 Jun 2025, 17:17, 1 reply, 1 day ago)

Glorious

( Cheers Cheers, Sun 29 Jun 2025, 10:53, Reply)