2581: Health Stats

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Health Stats

Title text: You will live on forever in our hearts, pushing a little extra blood toward our left hands now and then to give them a squeeze.

Explanation

This explanation may be incomplete or incorrect: Created by an EXPLODING RIGHT HAND - Please change this comment when editing this page. Do NOT delete this tag too soon. If you can address this issue, please edit the page! Thanks.

Cueball has bought a new smartwatch with a health tracker. For instance, it can monitor the volume of blood in his left hand (specifically the one the watch is being worn on the wrist of), indicating this number in milliliters (ml). While he studies this new information, the volume of blood changes constantly, with his pulse or due to the positioning of his hand (above/below his heart, held up or down; he changes the hand's position from panel to panel) or, more likely, just normal measurement inaccuracies for consumer devices. He tells this to someone off-panel, who replies to all his comments.

At first, Cueball just assumes the small change is normal, but when the changes of two measurements in a row both increase, this freaks him out as he extrapolates these two data points into the future. If this rather selective trend continues, his hand may explode from its ever-increasing volume of blood. Either this, or Cueball noticed that the variation in the first three data points was <±0.025, but the variation suddenly surpassing this level by one order of magnitude becomes alarming. As a consequence of him freaking out his pulse also begins to rise, likely increasing his blood pressure, which could cause another rise in the volume of blood in his hand. And the pulse increase in itself, only makes him even more scared, causing a positive feedback loop.

The total difference between the maximum (22.09 ml) and minimum volume (21.81 ml) of blood in his hand is only 0.28 ml compared to an average of 21.9 ml, so less than 1.5% difference. This must be assumed to be a normal fluctuation from heartbeat to heartbeat and/or with change of posture. For that matter, Cueball has no idea what a normal volume of blood in his left hand would be, as indicated by his comment in the first panel that he's "not sure how to interpret" the intiial measurement. However, he seems to have assumed that 21.83 ml was a normal measurement simply since it was the first one he saw.

Just before he freaks out his off-panel friend begins to tell him to stop looking at the watch all the time. But he interrupts this mid-sentence as he starts to freak out. This final outbreak causes his off-screen companion to tease him, by saying that "We will treasure your memory". Thus joking that Cueball must already be assuming that he will soon die from the blood loss when his hand explodes.

The title text continues with this teasing where the friend jokes that after his demise he will live on forever in his friends' hearts. And from there he will thus also be responsible for pushing a bit more blood into his friends' left hands, now and again, so they can feel this as a squeeze, to remind them of how they lost their friend, to a left-handed blood explosion.

This is likely meant as a parable on people monitoring their natural fluctuating body functions too closely as exemplified by the tenth- and hundredth-milliliter decimal place in the output (1/300th-1/3000th of a fluid ounce).

Transcript

[Cueball is looking down and to the right at his bend arm, where a small device is radiating as shown with several small lines. Above him the message from the device is shown in a frame, that is divided in two by a line. The top part has one line of text, with a x at the end for closing the message. And below in the second half are two lines of text. Cueball is speaking to someone off-panel, who replies from a starburst at the panel's edge.]

Box title bar: New health stat!

Box: Left hand blood volume: 21.83 mL

Cueball: Oh. Cool. Not sure how to interpret that, but good to know, I guess.

Off-panel voice: I guess!

[Same setting but Cueball has turned to the left, still looking at his device on his bend arm. The message on the device is now only showing the message part, so it is no longer divided into two parts.]

Box: Left hand blood volume: 21.81 mL

Cueball: Huh, it's going down. I guess that happens.

Off-panel voice: Mhm.

[In a frame-less panel Cueball now has both arms bend with his hands close together in front of him. He has once again turned toward the right, and is still looking at the device.]

Box: Left hand blood volume: 21.86 mL

Cueball: Oh weird, now it's going up higher than before.

Off-panel voice: Maybe you shouldn't look at-

[Cueball now holds his arm with the device outstretched towards the right, with his other arm bent in front of him a finger raised.]

Box: Left hand blood volume: 22.09 mL

Cueball: It's going way up! Is my hand exploding?!

Cueball: And now my pulse is rising! Aaaaa!!!!

Off-panel voice: So sorry. We will treasure your memory.

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Discussion

Pretty late comic! GcGYSF(asterisk)P(vertical line)e (talk) 06:26, 15 February 2022 (UTC)

It's positive feedback, not negative. Negative feedback is when the response is in the opposite direction of the stimulus (e.g. Cueball becoming more relaxed as blood pressure goes up) and often results in an equilibrium state. A vicious circle (positive feedback) by contrast is when the response ends up increasing the stimulus further, as is the case in this comic.162.158.233.29 11:19, 15 February 2022 (UTC) https://www.albert.io/blog/positive-negative-feedback-loops-biology/#:~:text=Positive%20feedback%20occurs%20to%20increase,back%20to%20a%20stable%20state.172.70.126.221 11:50, 15 February 2022 (UTC)

I feel Cueball's pain. My employer has a checklist where we are supposed to take our temperature every day before coming to work. My problem is, I run hot. My "normal" temperature is usually 99.6ish, not 98.6ish. I knew this for years prior to the pandemic - I used to be a frequent blood donor and would get turned away about a third of the time because they won't take anyone above 99.5. Even though I knew all this, the paranoia induced by daily monitoring and a value that would be abnormal for others but totally typical for me got so bad that I don't do it. No one is enforcing it at the door - it is basically the honor system, and it was causing me more anxiety than actually solving anything. 172.70.114.69 18:54, 15 February 2022 (UTC)

A simple "solution" to this, at least for forehead thermometers, would be to engage in some moderate exercise shortly before having your temperature taken, such that you get some perspiration on your forehead. Then you can discontinue the exercise, and the sweat will evaporate soon afterwards, resulting in a particularly low skin temperature for a short while. Dansiman (talk) 21:30, 15 February 2022 (UTC)

No one is taking my temperature - like I said, it is the honor system and they are expecting you to do it before you show up. My point is that doing so was creating anxiety much like Cueball's, with not a lot of utility to the acquired data. 162.158.79.14 18:27, 16 February 2022 (UTC)

'Google: 99.6 f to c' -> '37.56' Hmm, that seems very close to average. Why are those people so concerned about such a small difference compared to average body temperature? Beanie ^talk 20:11, 16 February 2022 (UTC)

I see this as mainly a joke on how consumer devices often provide more precision than is actually needed, and users don't understand that the extra precision is usually not significant. The only reason "normal" human temperature is 98.6F, to the 10th of a degree, is because average temperature was first measured in Celsius then this was convered to Fahrenheit. But 37C was originally rounded off from an average, so it wasn't precise enough to warrant using an extra decimal place in the conversion. Barmar (talk) 19:23, 15 February 2022 (UTC)

Also a saultory lesson in the misunderstanding of the relationship (i.e. that there really isnt one, at least reliably) between precision and accuracy. Without proper calibration, even moment-to-moment consistency of measurement can be sullied by it being (consistently) wrong, or wrongly read out. Adding more decimals may seem to give a more persuasive estimate, but doesn't do a thing to stop inaccuracy. 141.101.98.225 19:51, 15 February 2022 (UTC)

I think we can assume that customer devices have a significant inaccuracy but have build-in time consistency to increase the trust in the device. Thus, I don't think the inconsistency between two measurements can explain the variation. Since the hand is moved around on the comic strip positioning is a more likely cause. --172.70.38.243 20:10, 15 February 2022 (UTC)

Saw an article a few weeks ago on the nocebo effect of fitness gadgets ... could be related. https://www.bloomberg.com/opinion/articles/2021-12-15/wrist-size-fitness-gadgets-make-for-great-gifts-but-beware-of-the-nocebo-effect Boatster (talk) 00:02, 16 February 2022 (UTC)

Just a side note: 72.961% of all readers trusts fictional data more if it has lots of decimals. 162.158.134.121 11:26, 16 February 2022 (UTC)

True fact: When the height of Mount Everest was first accurately calculated, the result was 29,000 ft. That was within a precision of one foot, but looked like it was rounded to the nearest 1,000, so they announced it to be 29,002 ft instead to actually look as accurate as it was (or had been!) precise.

Incidentally, that figure was established from measurements taken from no closer than 100 miles from the mountain (due to local politics and other difficulties) that had to account for atmospheric refraction, as well as the curvature of the Earth, etc. The current official measure, with 'hands on' access, is 29,031.7 ft. The difference (of 9.66m, to put it into modern units) is slight. If you assume it is changing directly in line with the average rise of the Himalayas, over the intervening 170 years, that's around 8.91m off. It's not possible to assess seasonal (snow-depth) changes, but that might cut another good fraction off again. Not bad for 1850s capabilities. 172.70.86.68 22:47, 16 February 2022 (UTC)

The explanation says that it is a new smartwatch, but the comic immediately made me think it was a new feature added by a software update. 172.70.54.203 15:55, 16 February 2022 (UTC)

how close is the volume of blood in a hand to a typical adult human? 172.70.162.155 20:16, 17 February 2022 (UTC)

This comic has me wondering if there is a fitness device that measures blood volume "down there"? That would introduce a hilarious new esports contest. These Are Not The Comments You Are Looking For (talk) 06:37, 20 February 2022 (UTC)

For the record, .28ml is approx 1/17th of a teaspoon JamesCurran (talk) 22:22, 17 March 2022 (UTC)