In short, the consistency strength of the existence of an inaccessible cardinal is greater than that of ZFC alone. At first glance, then, the logical status of the existence of even the smallest of the large cardinals is a bit startling: we can’t prove they exist; it is consistent that they don’t exist; and we can prove that we cannot prove that their existence is relatively consistent. What, then, is the point of them?

Source: jdh.hamkins.org

not very obvious

Did you know De Thiende by Stevin forms the basis for the American dollar? In 1792, the United States of America adopted the dollar as its national currency. Its later president Thomas Jefferson (1743-1826) advocates a decimal system basis for the new currency. In his argument, he appeals to Stevin's De thiende. That is why one dollar consists of 100 cents. It makes the dollar the first modern currency.

Source: artsandculture.google.com

This principle of advantage gain through geometric size increase holdstrue for ships of both air and water. Eventually doubling of length of sea-going ships finally runs into trouble. For instance, an ocean liner made morethan 1000 feet long would have to span between two giant waves and wouldhave to be doubled in size to do so. If doubled in size once more, however,

Source: d.nostr.build

The Babylonians discovered exact sexagesimal trigonometry at least 1500 years before the ancient Greeks discovered trigonometry.•Babylonian exact sexagesimal trigonometry uses exact ratios and square ratios instead of approximation and angles.

Source: www.sciencedirect.com