I had a labmate who insisted on ph testing distilled water. Not because he was concerned about contamination, but because it was part of the ritual.

A Story About ‘Magic’, from ESR’s “Jargon File”

Some years ago, I (GLS) was snooping around in the cabinets that housed the MIT AI Lab’s PDP-10, and noticed a little switch glued to the frame of one cabinet. It was obviously a homebrew job, added by one of the lab’s hardware hackers (no one knows who).

You don’t touch an unknown switch on a computer without knowing what it does, because you might crash the computer. The switch was labeled in a most unhelpful way. It had two positions, and scrawled in pencil on the metal switch body were the words ‘magic’ and ‘more magic’. The switch was in the ‘more magic’ position.

I called another hacker over to look at it. He had never seen the switch before either. Closer examination revealed that the switch had only one wire running to it! The other end of the wire did disappear into the maze of wires inside the computer, but it’s a basic fact of electricity that a switch can’t do anything unless there are two wires connected to it. This switch had a wire connected on one side and no wire on its other side.

It was clear that this switch was someone’s idea of a silly joke. Convinced by our reasoning that the switch was inoperative, we flipped it. The computer instantly crashed.

Imagine our utter astonishment. We wrote it off as coincidence, but nevertheless restored the switch to the ‘more magic’ position before reviving the computer.

A year later, I told this story to yet another hacker, David Moon as I recall. He clearly doubted my sanity, or suspected me of a supernatural belief in the power of this switch, or perhaps thought I was fooling him with a bogus saga. To prove it to him, I showed him the very switch, still glued to the cabinet frame with only one wire connected to it, still in the ‘more magic’ position. We scrutinized the switch and its lone connection, and found that the other end of the wire, though connected to the computer wiring, was connected to a ground pin. That clearly made the switch doubly useless: not only was it electrically nonoperative, but it was connected to a place that couldn’t affect anything anyway. So we flipped the switch.

The computer promptly crashed.

This time we ran for Richard Greenblatt, a long-time MIT hacker, who was close at hand. He had never noticed the switch before, either. He inspected it, concluded it was useless, got some diagonal cutters and diked it out. We then revived the computer and it has run fine ever since.

We still don’t know how the switch crashed the machine. There is a theory that some circuit near the ground pin was marginal, and flipping the switch changed the electrical capacitance enough to upset the circuit as millionth-of-a-second pulses went through it. But we’ll never know for sure; all we can really say is that the switch was magic.

I still have that switch in my basement. Maybe I’m silly, but I usually keep it set on ‘more magic’.

1994: Another explanation of this story has since been offered. Note that the switch body was metal. Suppose that the non-connected side of the switch was connected to the switch body (usually the body is connected to a separate earth lug, but there are exceptions). The body is connected to the computer case, which is, presumably, grounded. Now the circuit ground within the machine isn’t necessarily at the same potential as the case ground, so flipping the switch connected the circuit ground to the case ground, causing a voltage drop/jump which reset the machine. This was probably discovered by someone who found out the hard way that there was a potential difference between the two, and who then wired in the switch as a joke.

To be fair you could call that following the empirical evidence despite it running against theory, which is good science.

While not specifically science, my engineering department on board ship started slapping Mechanicus purity seals on our equipment to keep it working.

Anedotally this is why I didn’t like bio, none of the labs really ever worked and we always fudged some data.

I knew somebody who kept a can of pig brains on their ephys rig bc their mentor had always done the same to get their rig working and passed the tradition on to several mentees.

Idk how it worked for the other mentees but it didn’t seem to bring much luck to that rig.

Regarding the effect of worm drawings on the lifespan on microorganisms: a systematic analysis.

I wonder if many superstitions in rational secular people could just be bad terminology for behavior that can have some good reasons behind it.

One is using intuition to access your brain power in a way that’s different than conscious thought and verbal reasoning. For me at least, when I have spent months and even years troubleshooting or upgrading different parts of a system, I develop an intuition where I can track down certain types of issues really quickly or with very limited information.

There are often things that, in the wise words of Mr. Plinkett, you didn’t notice – but your brain did.

Second, and most important, is the ubiquitous one-two punch that there are always hidden variables and that they are by definition not easy to predict.

I have had my time wasted by way dumber and more seemingly random things than that worm drawing. I’m not a biologist but I could still speculate a bunch of potential reasons that, while wrong, would still be way more predictable than actual issues I’ve dealt with at work and home.

I can also predict that in that situation I would absolutely keep doing the drawings. My line of reasoning here applies to many other situations as well: The world is complicated. There could be a helpful effect from some part of the drawing process, or there could be no effect, OR there could be some crazy interaction of 3 different variables. Don’t change anything, finish the current task, then decide if figuring out the cause & effect is worth doing next. (some of that also comes from my internal voice tasked with keeping my adhd in check)