Notes

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Dog years are not seven to one The first year is worth about fifteen and the second about nine. Size decides everything after that, and it works backwards. Why every channel claims the same sale Add up what each platform reports and the total exceeds your actual revenue. None of them is lying. The loads that never switch off Standby is regulated down to fractions of a watt. The expensive things are the ones that are not on standby at all. The calendar repeats every four hundred years 146,097 days divides exactly by seven, which is why 15 June 1990 and 15 June 2390 are both Fridays. A heat pump moves heat rather than making it A COP of 3.5 means one unit of electricity delivers three and a half of heat. Flow temperature is what decides the number. The cut-off date decides, not the birthday A school year, a claim and an ID check all read age on a fixed date. Being born a day either side changes the answer by a year. What the earth wire actually does It is not there to carry current. It is there to make sure that when something goes wrong, enough current flows to trip the protection. Insulation is diminishing returns The first 100 mm removes most of the heat loss. The second 100 mm removes most of what is left, which is much less. Half your age plus seven, and where it came from A nineteenth-century piece of social advice with one genuinely interesting mathematical property: it is symmetric. Per 100 grams is the only comparable number A serving is a decision made by the manufacturer. Two products can only be compared on the column nobody chooses. Your age is a convention Korean age counted you as one at birth. Chinese nominal age still does. On Mars you are nineteen. Where ten thousand steps came from A 1960s Japanese pedometer name, not a study. The research since has found most of the benefit arrives well before it.

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