MATATO work notes

Today I worked on making a connection to the Pi and getting a file from a specified directory, which works now. I used the MATLAB command line to connect and download all files in a directory:
mypi = raspi('','piUsername','password');
My current thinking is to transfer the most current file to the Mac, possibly even deleting it from the Pi after the transfer to save space. These should transfer into a unique directory on the Mac; alternatively, they could transfer into a ‘current’ directory, which is then copied and renamed after the experiment.
This approach wouldn’t take as much effort as trying to set everything up on the Pi alone, which would require basically rewriting the script and motor control bits in Python or something to run on the Pi. This may be the way to go in the long run, but for now it makes sense to just improve on what I had before by introducing the higher quality images from the Pi HQ camera.

Finally coming around?

Apoorva Mandavilli writing at The NY Times:

As many as 25 percent of people infected with the new coronavirus may not show symptoms, the director of the Centers for Disease Control and Prevention warns — a startlingly high number that complicates efforts to predict the pandemic’s course and strategies to mitigate its spread.

I’m not sure what’s taken the C.D.C. so long to realize this, I saw the same reports weeks ago coming out of research in China, South Korea, and Vo, Italy. This is the Achilles Heel in our current approach to dealing with this virus, and I’m afraid we won’t move past it until we have widespread testing.

I’m gonna start posting some things here as a diversion/mental health. I have lots to do these days to reinvent my courses for remote instruction, but I’m also finding myself drawn back here.

How Vitamix Sells Pricey Blenders to Affluent, Health-Conscious Foodies

Having recently joined the Cult of Vitamix, I enjoyed this piece in BusinessWeek on the company that makes these awesome machines. Although I wasn’t the one driving this particular purchase, this pretty much sums up my burgeoning relationship with it:

For all its appeal to celebrity chefs and extreme athletes, a Vitamix is tailor-made for the semi-enlightened male vaguely inclined toward better nutrition yet still rooted in his natural state of couch-bound torpor.

On a somewhat related note, it also makes a mean whisky sour.

Plants, giants, and other worlds

A few weeks ago, I gave a fun interview to Amy Wilkinson at MTV News about the “science” behind Jack the Giant Slayer, a re-telling of Jack and the Beanstalk. Jack the Giant Slayer movie posterThe first thing that came up was how we tend to forget that plants are even alive. I had planned to bring this up at some point in our conversation, but Amy set it up beautifully by asking, “So is it even possible for a plant to actually come alive (like in the film)?” Of course I don’t fault her at all for stating it this way, and when I pointed out that plants are already, in fact, alive, she laughed at herself. But we both knew what she meant, in part because we really do tend to think of plants as part of the scenery — inert, inanimate, unchanging. In reality, none of those are true, but the things they do, they do on a frequency that we don’t share, leaving so much of their activity functionally invisible to us. This invisibility is part of what makes it so startling and fun when a plant is cast as a character in a story like Jack and the Whatever.

As if it were not enough that plants do their things too slowly to notice, we have also managed to exile them from our day-to-day lives almost completely. Unless you are one of the 3.4 in 1000 Americans claiming farming as your occupation, you likely don’t have any need to think about plants actually growing. Sure, many people enjoy gardening or horticulture as a hobby, but I suspect most of them see plants through the lens of scenery and decoration, not as the living, active organisms they are. After all, if you can buy it in the Wal-Mart parking lot, how alive could it be?

Some plants, of course, do grow at a rate that approaches our own perception. World record-breaking pumpkins, for instance, can add 50 lbs of mass per day at the peak of their growth — you could nearly hear the water flowing into the gourd, I suspect. Certain varieties of clumping bamboo can grow about 3 ft per day — just shy of 1 mm per minute, so you’d have to watch closely, but you may just notice it. Certainly if you checked, enjoyed a cold beverage, and checked again, you’d be able to tell.

General Sherman RedwoodThese plants all pale in comparison to the mighty redwoods, Sequoiadendron giganteum. These gigantic organisms have literally billions of leaves and gain several tons per year in mass, almost all of which is added from thin air via photosynthesis. These giants actually speed up their growth rate as they age, something I’m sure many companies would love to replicate if they could. Their sheer size aside, the redwoods are an apt example here for another reason. Like the beanstalk in the folk tale, scientists have found an utterly foreign and fascinating world 250 ft above the ground, in their crowns. While it may not be filled with killer giants and gold coins, I’d happily trade an old cow for a chance to visit such a world and have a look around.

On running out of helium

On running out of helium:

We mine it, but once we mine what’s there, it will take either hundreds of millions of years to make more, or we need to find a new source of Helium, such as through mastering terrestrial nuclear fusion or perhaps mining the Moon.

In the meantime, we should be aware that every time we fill a Helium balloon, we’re taking something that it took the entire natural history of the Earth to create and basically banishing it from our planet.

Religion and Well-being

Tom Rees has highlighted an interesting bit of social science research on his blog, Epiphenom:

The well-being of religious adherents follows a clear U-shape, with the least happy being those people with moderate faith.

Also included on the plot was the well-being of atheists, agnostics, and “no religion” (nihilists?) as measured in the study. It seems to me that the biggest take-home from this figure is that the individuals most certain in their beliefs were the happiest — either those with strong religious belief or atheism. Maybe it’s too simplistic to assume that atheists tend to be more certain or definitive in their worldview than others who follow no religion?