Jim Willis

I think about it most when I’m getting the least of it. Anyway, very good piece in the nytimes about relationship between diet and sleep. I know that on nights when I get 6hrs of spotty sleep, it is very difficult to say no to the Dunkin’ Donuts drive thru. 

Per several of the studies mentioned in this article, that’s because insufficient sleep increases ghrelin, the hormone that makes you hungry. It’s a viscous cycle though because the more crap you eat, the worse your sleep (and the more crap you want to eat).

The takeaway is that diet and sleep are entwined. Improving one can help you improve the other and vice versa, creating a positive cycle where they perpetuate one another, said Dr. Susan Redline, a senior physician at the Brigham and Women’s Hospital and a professor of sleep medicine at Harvard Medical School who studies diet and sleep disorders.

I’m always on the lookout for clues as to why I get sick more frequently than most folks and why, when I do get sick, my colds last so much longer. I came across this study which adds additional weight to my theory that one cause is that for reasons I cannot really do much about, my sleep sucks.

Poorer sleep efficiency and shorter sleep duration in the weeks preceding exposure to a rhinovirus were associated with lower resistance to illness…

There was a graded association with average sleep duration: participants with less than 7 hours of sleep were 2.94 times (95% confidence interval [CI], 1.18-7.30) more likely to develop a cold than those with 8 hours or more of sleep. The association with sleep efficiency was also graded: participants with less than 92% efficiency were 5.50 times (95% CI, 2.08-14.48) more likely to develop a cold than those with 98% or more efficiency

What’s especially interesting here is the sleep efficiency bit. I track my sleep using my Apple Watch and an application called AutoSleep. It is fairly reliable and I have at least a year’s worth of sleep data collected now. It’s interesting to see how lower sleep efficiency relates to lower heart rate variability when I dig into the Health app. This quote, especially, was striking:

even a minimal habitual sleep disturbance (sleep losses of 2%-8%, 10-38 minutes for an 8-hour sleeper) is associated with 3.9 times the risk of developing a cold.

AutoSleep data on the iPhone

What’s a bit confusing for me though is how many nights in a given period can sleep efficiency fall below 92% before that 3.9x risk occurs. Surely one night or two nights over a 2 week period (the length of the study) can’t cause this 3.9x risk. 

Still, taken as a whole/moving average over a 2 week period, it does seem like one of the AutoSleep numbers I should be looking at it sleep efficiency. 

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I was struggling to keep my Marvis player settings in sync across multiple iOS devices and landed on this really low friction solution:

Go to Settings->Advanced->Export Settings and then use the share sheet the pops up to AirDrop the file to your secondary devices. The receiving device will automatically open the file in Marvis and import the new settings.

I have been thinking a lot about the relative merits of two different ways of storing files: a robust and well-executed hierarchical folder/file system vs tagging/metadata files. I’m thinking about this in the context of a work project but also in light of something L.M. Sacacas wrote a while back in, A World Ordered Only By Search, one of his excellent newsletters from Convivial Society.

“There comes a point when our capacity to store information outpaces our ability to actively organize it, no matter how prodigious our effort to do so.”

For many computer users of my generation, the filing cabinet has been a very useful metaphor for a computer’s directory system. Organizing computer files in nested folders is a reasonable extension of how the physical office space has always worked. That said, I’ve been considering a few of the limitations of the file/nested folder metaphor on computers that is probably hitting almost 30 years old at this point, if not more.

1.) As this metaphor has been the primary way of understanding file organization for almost 30 years, we now have a generation of computer users who have never seen an actual filing cabinet or manilla file folder. The metaphor and filing system are lost on them, especially as this generation has almost certainly grown up using gmail or similar for their email which relies on searching, not organizing emails into folders.

2.) In the file/folder model of file storage, a file can only exist in one place at one time. In this case we’ve taken a limitation of the physical world (“get me the invoice for last month from the Facilities folder”) and carried it over to the digital domain (“let me save this invoice in the Facilities folder”). In the world of tagging and metadata though, a file can exist in multiple places at the same time. (“Let me tag this document as an “invoice” and as related to “Facilities.”) The same instance of a file can live in multiple collections at once, transcending the limitations of the physical filing cabinet.

3.) Now, getting back to that Sacacas quote from above: folder hierarchies require some internalized understanding of how the filing system works. It is very rare to encounter a hierarchical file system that is self-documenting enough that a new employee could file a document without any sort of training.  Moreover, as anyone who has maintained even the most well-manicured and maintained hierarchical file system knows, sometimes you’ve got to fall back on searching because you just can’t recall where it made sense to put some document. Tagging removes the burden of having to recall the “why” of a folder system.

All of this said, searching is an imperfect solution. Just creating some kind of junk drawer for your data, the hot mess that Sacacas refers to in his piece, is not sustainable for an organization. Some kind of tagging needs to be implemented if searching is going to work. However, tagging does introduce some friction into the file management process, so we’re trading the present convenience of quickly being able to drop a file into a folder in some well-manicured hierarchy for the tedium of tagging a file when it needs to be saved with the future promise that this document will be easier to find. Either way, if not at the individual level than absolutely at the organizational level, our curation, collection and creation of digital data has totally outpaced our ability to manage it using the outdated metaphor of a filing cabinet.

“We build external rather than internal archives. And we certainly don’t believe that interiorizing knowledge is a way of fitting the soul to the order of things. In part, because the very idea of an order of things is implausible to those of us whose primary encounter with the world is mediated by massive externalized databases of variously coded information.” 

That quote is from the same Sacacas piece where, citing Illich, he goes on to discuss how when the “text” became detached from the “book” the individual became detached from the community. Much of this makes me think about how work will change:

When an office migrates to tagging and becomes detached from the geological layers of meaning embedded in its folder structures, what will happen to shared understanding of the business that was represented by those folders?

I’d love to hear any thoughts/feedback on this. Feel free to get in touch.

Really a bummer that iOS makes it so tricky to log listening to last.fm. While on vacation this week I haven’t been sitting at my computer that much and have been doing a bunch of listening on my iPhone and iPad and very little of what I’ve listened to is showing up in my log over at last.fm. I’ve discovered some great music this week and feel like a bunch of those discoveries are gone now because I have no easy way of resurfacing them. Agh. So frustrating.

I’ve been buying albums from new artists for the past year or so. If I find myself repeatedly listening to a new release on Spotify or Apple Music, I buy the record. It’s usually about $30 w/ shipping which is steep but I’ve long suspected that the margin is pretty good for the artist so, why not.

A couple of recent purchases are Yola from the Easy Eye store and a couple of Rose City Band releases from Thrill Jockey. Have listened to them a few times and really like having the artwork/liner notes.

Anyway, came across this today:

A vinyl record costs ~$7 to manufacture, and a band typically sells it directly to fans for $25 — good for $18 in profit.

By contrast, streaming services only pay out a fraction of a penny for each listen. 

A band would have to amass 450k streams on Spotify to match the profit of 100 vinyl sales.

So I think my assumption was correct that buying records from artists is a good way to support them. Anyway, so more interesting numbers around vinyl and supply chain are in the full article.