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Which number should replace the question mark?

Correct answers: 371

The first user who solved this task is Eric Newton.

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Patton Oswalt: Obituary Fear

My other big obituary fear is, when I die, theyll have my picture, and they always have underneath it, in quotes, He loved to laugh. Oh, he loved to laugh. Well, that doesnt tell you anything. Everybody loves to laugh -- youre laughing! Thats like saying, He hungered for food.

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Joseph Black

Born 16 Apr 1728; died 6 Dec 1799 at age 71. Scottish chemist and physicist who experimented with "fixed air" (carbon dioxide), discovered bicarbonates and identified latent heat. He lectured in chemistry, anatomy at the University of Glasgow, while also a physician. From heated magnesia alba (magnesium carbonate), Black collected a gas, carbon dioxide, different from common air. He published Experiments Upon Magnesia Alba, Quicklime, and Some Other Alcaline Substances (1756). Carbon dioxide was also released by fermentation, respiration, and burning charcoal so he assumed it was in the atmosphere. He also observed that ice melts without change of temperature, due to heat that becomes "hidden" - latent heat - and determined "specific heat" for heated of materials.[DSB gives date of death 6 Dec 1799. EB gives 10 Nov 1799.]

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