by William S. Higgins and Barry D. Gehm
Thanks to NASA
What have you been up to?
It took Lisa Piccirillo less than a week to answer a long-standing math problem about a strange knot. quantamagazine.org
This isn’t the same problem you and I have when our shoe laces get tangled.
The question asked whether the Conway knot is a slice of a higher-dimensional knot. “Sliceness” is one of the first natural questions knot theorists ask about knots in higher-dimensional spaces… The Conway knot had thumbed its nose at mathematicians for decades.
I’m not likely to understand the question, much less the solution, but for those of you with the math chops, there’s more explanation and diagrams in the article. You’ll find a beauty in the math that, alas, I’ll never share, but I still enjoy the tale.
If you’ve heard that nuclear energy is the low-carbon way out of the global warming‘s slow motion (and not-so-slow motion) disaster, you may wonder if the solution is worse than the problem. But wait. Today’s designs aren’t your parents’ nuclear reactors. Not even uranium powered.
I hope that catches your attention. Check out this video for more.
A flock of wild turkeys visited my bird feeder this winter. On and off, I’ve seen turkeys in the arroyo below me, but my windy ridge never attracted them before. This winter, up to 30 came at a time to peck at seed on the ground, but now it’s spring and they’ve gone home to the arroyo.
Lately, one lone bird had reappeared. There was a short turkey hunting season recently, and I heard shots in the forest, so I suspect that scattered his buddies.
He’s a nervous thing, barely grabbing a few seeds between periods at high alert. Being a lone turkey is a tough job. I enjoy his visits, but I hope he’ll find his way home to his flock soon.
Your Loyal Wingmen fly alongside you into danger. These craft have no pilots, not even remote operators, and are no burden on you. They can engage the most dangerous parts of the mission while you stand off at a safer distance.
Safety for our pilots, but how sure are we that AI planes will make humane / human decisions? Is a battle that is tidier better for our future? Makes me think of a Star Trek TOS episode, A Taste Of Armageddon. But, I’m binging on TOS, so everything makes me think of one episode or another.
Farther means faster
But the universe has changed
The blind cannot see