DrKrettin

Senior Members
  • Content count

    818
  • Joined

  • Last visited

  • Days Won

    5

DrKrettin last won the day on June 25

DrKrettin had the most liked content!

Community Reputation

221 Beacon of Hope

About DrKrettin

  • Rank
    Protist

Profile Information

  • Gender
    Male
  • Favorite Area of Science
    Astronomy

Recent Profile Visitors

4308 profile views
  1. Explain Relativity To A Six Years Old

    I find it very difficult to believe that he said that. A 6-year-old probably does not grasp physical concepts of mass, time, energy, force and 3-D space sufficiently to understand even Newton's laws.
  2. Is it ethical to view men and women as different?

    The answer to the thread title is extremely simple: yes
  3. Is it ethical to view men and women as different?

    Anybody who denies that there are differences must be clinically insane. Anybody making value judgments based on those differences must be sexist.
  4. All I can think of is a firework attached to one side which explodes, thrusting burnt gunpowder sideways. This would give an impulse which would topple the box (with a bang). This would of course only work if the box is not airtight. (Reminding me of the lorry with a 5 ton load limit, carrying 6 tons of birds.....)
  5. I thought that too, but thought it too obvious. Also "I struggle up a podium lugging a large ball" negates that possibility because you would not have to lug it. Anyway, it still conforms to the proposition, because it is the heavier air that falls, not the ball.
  6. The subject is an interesting one, but I need a little more padding in that to understand the point.
  7. A phone harassment

    Living outside the UK, I have discovered that some friends in the UK have adopted the procedure of never actually answering the phone. They check for missed calls and return calls from numbers that they recognize. That explained why when I called old friends they never seemed to be at home. This procedure has been adopted simply because of the number of unwanted sales calls they had. This works as long as you are the only person who does it. If you return a call to somebody who has the same procedure, you'll never talk to each other.
  8. Statistics Question

    This is actually fascinating, because I have never encountered anybody online who is so absurdly arrogant as to attach so much importance to their "ignore list" on the assumption that it might upset anybody included on it. That, plus the obsession with irrelevant detail about some BA qualification (I dare not be more specific) points to some psychological state which needs some clinical attention. I find myself thinking about Trump for some reason.
  9. Statistics Question

    It's time you joined the IgnoredByScherado club
  10. Again, you seem to consider these things on a completely rational level. It is as though you have a check list, and potential mates tick various boxes and clock up a score, above which they are suitable as a lifelong mate. If you make choices like that, then I agree that potential genetic problems should be on the list. But if you make decisions using these criteria, my guess is that it is all irrelevant because it won't be a long-term relationship. I hope I'm wrong.
  11. You seem to assume that choosing a partner is a totally rational decision based on calculated risk factors. Life is not like that - you might use this criterion and then discover that you can't have children. Choose the partner based on a conviction that you want to spend the rest of your life with them. Everything else is peripheral and unpredictable. (Although no doubt somebody will come up with a valid exception to my generalisation)
  12. Fair enough, but I suspect none of them were classicists, making a claim like that, because they are very shaky ground. Any one example as I gave is necessarily tenuous, but taken together with other examples, we can be fairly certain that the flat Earth was assumed until early Greek scientists came along. I could go on, but this is off-topic, so I'll just quote Wiki: The flat Earth model is an archaic conception of Earth's shape as a plane or disk. Many ancient cultures subscribed to a flat Earth cosmography, including Greece until the classical period, the Bronze Age and Iron Age civilizations of the Near East until the Hellenistic period, India until the Gupta period (early centuries AD), and China until the 17th century.
  13. I think you are confusing "how to use one" with "how it works". I suspect the vast majority of uses are adept at using it, but have absolutely no idea how it actually works. What an extraordinary claim. Try reading a few lines from Homer's Odyssey (ca. 700 B.C.) Book 1.22: "But Poseidon was gone now to visit the far Aithiopians, Aithiopians, most distant of men, who live divided, some at the setting of Hyperion, some at his rising." Aithiopian (now Ethiopian) means literally "burned face" i.e. black. The idea is clearly that they lived where the sun rose or where the sun set, and they had black faces because the sun was obviously much nearer the Earth at those points. That makes total sense with a flat Earth, standard assumption of that era (or earlier tradition at any rate)
  14. I suppose the question in the thread title begs another question, namely: what constitutes "great"?