Friday, December 5, 2025

Grizzly Vs. Gorilla

https://www.youtube.com/watch?v=AQu5YnZ6b8E

I am more afraid of bears than any other animal, at least in North America.  In North America, I'm not likely to run into a komodo dragon.  

If you act passive and don't make eye contact with a gorilla, it is unlikely to attack you.

A former coworker was hiking in Yellowstone National Park when a bear followed him on the trail.  He got off the trail and the bear continued on.

My late stepdad co-owned a small farm with some friends.  They would mostly use it for get togethers.   It was very close to Big Oaks National Wildlife Refuge where a bear had been spotted.  Bears are rare in Indiana, but this particular bear had been spotted multiple times, first swimming the Ohio River from Kentucky to Indiana.  It covered much ground because it had been spotted in multiple places, including Salem, Indiana where I was born.  It would have had to cross highways to cover this much ground.

Tuesday, December 2, 2025

Dinosaurs On Earth 🌍 w/ Neil deGrasse Tyson

Nobody Knows How Tylenol Works

The 1970s Cooling Scare

https://www.youtube.com/watch?v=NdDdmQCneQA&t=139s

This has not changed.  The Earth is halfway between its maximum tilt and its minimum tilt, which we will reach in roughly 11,000 years.  A period of mass glaciation is inevitable, but we are not likely to see a change in our lifetime.  Nevertheless, we should be in the cool-down period.  Our warming of the Earth is temporary since we have limited fossil fuel reserves.

We could avoid the next period of mass glaciation by either increasing the CO2 level, by getting it from limestone, or we could find ways to destroy the advancing glaciers.  

Monday, December 1, 2025

Whale swallows two Women in Kayak and then......


@Vaughan4
1 year ago
Marine biologist here: Baleen whales can't actually swallow anything larger than a softball.  They take a huge mouthful of water into their mouths (usually full of tiny critters like krill, which are tiny versions of shrimp, and maybe some small fish), and use their tongues to push the water back out of their mouths while filtering out the krill with their baleen plates (they don't have teeth).  Then they swallow all the krill that the baleen trapped.  If they accidentally get larger animals in their mouths (like seals or such, which has been witnessed to happen), they reopen their mouths pretty quickly and let them out because they can't swallow them.


@rita1259-y5c
3 years ago
What bragging rights they had afterwards! You could say " Well, this day might be bad, but not as bad as the day I got swallowed by a whale!"

Monday, November 24, 2025

Re: The most beautiful idea in physics

I recently had an idea about this that might be more difficult for most people to wrap their brain around.  It is more mind bending.

My idea depends upon whether the laws of physics are deterministic.  Quantum theory claims that the universe is random on the quantum scale.  However, I agree with Einstein that this reflects a physical reality that we are unable to detect and are unaware of.  This is called, "hidden variables", and recently scientists have claimed to have disproven "local hidden variables".  However, this claim I find questionable.

If the laws of physics are deterministic then it means that everything is predictable regardless whether or not it actually exists.   Given a set of inputs and rules, you get the same outputs.  For example, mathematical concepts like Pi would still exist even if we had never discovered them.  Pi would still exist if we had never drawn a circle.  (I agree with people who claim that things are not invented, but discovered.  This also leads to much discussion about free will, claiming that we need a random universe to have free will.)

By this reasoning, if the universe is deterministic, we would be unable to distinguish whether we are real or just a mathematical pattern.  Is the Mandelbrot set real, or just a mathematical pattern?  It is "real" in the sense that mathematics produces it.   The pattern would still be there if we had never discovered it.

Best wishes,

John Coffey


Fwd: The most beautiful idea in physics

FYI.

---------- Forwarded message ---------
On Sun, Nov 23, 2025 at 8:17 PM Grant wrote:
Incredible nature is one reason I believe in God.  As stated in the interview, "ït all comes together"  Physics is beautiful. 


---------- Forwarded message ---------
From: John Coffey
To: Grant


Grant,

I have a similar viewpoint.  I am not an atheist.  I like pantheism, but I am more of an agnostic.

I tend to believe in a generic concept of God, but this presents philosophical questions that I am not comfortable with.  Those would be, "Who made God?" and "Why is there something instead of nothing?"   My point is that we believe that all events have a cause, so every event must have had another event that preceded it.  Does this go back in time forever?   Every possible answer I can come up with makes no sense.  Either there was a first event or there wasn't.  If there was a first event, what caused it?

If we believe that God is eternal going in both time directions, then we might as well believe in a universe that is eternal in both time directions.  Believing in God might be wishful thinking.

--




Sunday, November 16, 2025

How Does Bent Time Make Gravity?

https://www.youtube.com/watch?v=U_sI9agWmEw

I have a hard time accepting the concept of "space-time." To me, space and time seem like fundamentally different things. We can't move through time the same way we move through space.

The video says that time bends more than space.  The time dilation we experience on the surface of planet Earth is around 0.00000001%.  Is this insignificant bending of time enough to cause 1G acceleration?

General Relativity is a useful model.  But if we follow it blindly, we might be ignoring other possible models.



The Zebra is UNDERRATED

Scientists Revive Prehistoric Worm After 46,000 Years

https://www.youtube.com/watch?v=COP5vCQbEkw

I like the Jurassic Park music.

Saturday, November 15, 2025

The Red Kangaroo is TERRIFYING

New pressure method captures 99% of CO2 for just $26 per ton


"In each stage, more of the carbon dioxide bubbles out and can then be compressed for permanent storage in underground formations."

That sounds like a drawback to me.  Underground storage is likely to be expensive, and it may not be truly permanent, since CO₂ could potentially leak out.

I strongly believe it's a shame to waste carbon dioxide.  It's a valuable resource because it acts as plant food, boosts crop yields, and contributes to the greening of deserts.  It also warms the planet slightly.  Before that warming becomes a serious problem, we reportedly will likely run out of fossil fuels — in roughly 125 years.  Most fossil fuels may be depleted by around 2100, and we have only about 50 years of oil reserves left.

Monday, November 10, 2025

14 Forgotten Sci-Fi Films Of The 1980s That Predicted The Future

https://www.youtube.com/watch?v=cKHMQSJ3Sec

Most of these movies are not particularly good.

In the comments section, people complained that the narration is AI generated, which is ironic.

I don't think that the video is as insightful as it claims to be.  Common tropes of science fiction going back a hundred years, such as the movie Metropolis, are about the over reliance on technology, machines that can think for themselves, and those machines turning on their creators.  In fact, it is hard to find science fiction that doesn't touch on at least one of these ideas.