Category Archives: Do you know?

Do you know: Why pens have a hole on the cap?

Bic pens have a hole on the cap so that if ingested by a child, a stream of air can continue to flow, avoiding asphyxiation. Continue reading





Do you know: The symbolism of 52 playing cards

The games of 52 cards are based on the Gregorian calendar: there are 4 colors for the 4 seasons of the year, 12 face cards (Jacks, Queens and Kings) for the 12 months, 52 cards for the 52 weeks and the sum of all the points of a game of 52 cards plus the Joker is 365 for the 365 days of the year.

The total of each color gives 91 points (the Jacks, Queens and Kings worth respectively 11, 12 and 13 points), which gives, by multiplying by 4, 364 points, to which one adds 1 point of Joker. A standard game comes with 2 Joker, which then gives a total of 366 for leap years. Continue reading