Skip Navigation
183 comments
  • Medicine and not taking anything as the will of god you should just accept, this and perception of death. That direct war, colonies are necessary - because now soft power, investments, influence, proxies are seen as more effective and better for business. That raw physical fitness means an easy superiority - and not a gun. Slavery and serfdom took other forms, so are associated stereotypes. Talking while seemingly alone is, arguably, not a solid sign of a mental illness now. First paleness became no longer a wanted trait, then we learnt that sun tan can be bad too. Putting fire to a field or a property isn't a good idea like it was before. Natural resources are free, limitless and harvested with no consequencies. Finding a stash of gold isn't that tempting too. Mass production, services kind off changed the amount of skills one needs in an average household and added complexity to it. Knowledge of how to get a clean water noticeably changed our ways. And perception of sex and family in different cultures drastically changed over time due to religion, law and science.

  • What goes up comes back down.

    Apply math and the object flies in a parabolic arc (not accounting for air friction and wind)

    Launch it high enough and the arc start looking elliptical. Gravitational force looks less like a constant rather is tempered by distance². If the acceleration closes the ellipse without hitting the (circular at this scale) ground, your object is now a satellite in orbit.

    Keep accelerating and eventually (a whole lot of acceleration) and special relativity factors affect the trajectory...and mass...and time dilates between the object and observers.

  • I don't know if anyone else has said it, but the belief that human illness and all that were caused by an imbalance of four bodily humors: black bile, yellow bile, blood, and phlegm. It's an old belief where the earliest I found it being practiced was around 400 B.C.

183 comments