"And if you tell the kids that today, they won't believe it!"
Not the author, but PLA has a glass transition temperature of around 60 degrees, which in layman's terms is when it starts to melt. However, depending on the quality of the printing process, layers start separating/the print is pliable significantly lower, at around 35-40 degrees. This means that in countries where you get 30+ degree summers, PLA is not really suitable for anything which experiences any kind of stress. I would hazard a guess that the standing laptop can cause quite a bit of stress when the train starts/stops.
What are these "kinetic contaminants"? Does anyone have more detail? I couldn't find anything.
Of the four reams of paper/card I have at home, two are labelled in "gsm", one is "g.m⁻²", and one uses both "g/m²" and "gsm" in different places. Weirdly, it seems that the specialist stuff is more likely to use "gsm" than the everyday 80 g/m² A4.
(But arguably what whoever decided on "gsm" should have done was to just use "g", with the "per square metre" left implicit.)
GSM basically only ever appears in print. If someone DOES ask "what does 120 gram mean here?" the clarification is going to be "Oh that's grams per square meter" and not "Oh that's gee es em"
I should mention GSM is also probably an americanism. I'm in the EU and out of the five packs of different kinds of art paper four are labeled in g/m2, and one has no labeled weight at all. None of them are marked in GSM as that abbreviation only works in english, while g/m2 works in all languages.
- Doing anything usually involves prep work. Want to take a step? First put on your shoes (literally or figuratively, depending). If your attempted habit is 70% prep, your brain will somewhat rightfully conclude "this is stupid" fairly quickly.
- "Just do X every day for [long time period]" has an inherent falsification problem: You aren't "allowed" to argue against it until you tried it. Stopped after 2 years because you saw no change (and 5 was recommended)? You are still not allowed to argue against the strategy!
- You can actually make steps so small that they're useless. I once set out to have (at least) one github commit online per day (going for that green tile!). This led to my brain finding hacks like rephrasing one sentence of an old blog post. Doing that for 20 days is way less effective than one single coding session, at 20 times the emotional cost.
- Doing something daily for a long time is extremely hard to achieve, especially if it's not the main thing you're doing. It's rare in the wild. You will find piano virtuosos who play piano daily, but not piano virtuosos who also go to the gym daily.
Note that this is also something that can be weaponized. Recently I've learned to draw and I found I kept having great difficulty just starting. To get over that I made the agreement with myself that at least once every two days, I would grab a pencil and page through my sketchbook. I'd find myself on the first blank page holding a pencil.
Turns out your brain thinking prep work without actual work is stupid really helps here. Once you've tricked yourself into doing the prep work, you might as well do the work-work.
e.g. for distance running: just make the deal with yourself that putting on your running clothes/shoes/etc and taking one step outside counts as having ran that day. You'll find yourself going for a run anyways once you get outside, because you might as well.
> "Just do X every day for [long time period]" has an inherent falsification problem
Very true, but unfortunately a lot of things worth doing require that sort of investment. When learning to draw I hated every single second for the first ~two months or so. And then like a switch getting flipped I started having fun.
> You can actually make steps so small that they're useless.
You should take the biggest steps you can actually keep yourself to. Maybe that leads to steps that are sub-optimally small, but taking useless steps is still doing more than taking no steps.
> Doing something daily for a long time is extremely hard to achieve
Oh for real, especially once you factor in force majeure. Hence why I went with "draw at least once every two days". That gives you wiggle room to plan around life events.
Turns out building habits is incredibly hard and no amount of seeking advise will do it for you. It's a slog and you gotta overcome that yourself one way or another.