markhollis's comments

markhollis | 4 years ago | on: Ask HN: Improving health despite working in a screen-based job

I am doing something that is similar. But in my case, I maintain the position for 10 seconds. When bending backwards, I try to maintain my head in the same 'vertical position' (if that makes sense to visualize). My physical therapist described it as making a 'double chin'.

markhollis | 4 years ago | on: Ask HN: Improving health despite working in a screen-based job

One issue that can develop over time is cervicogenic headache. This issue strains your muscles that span over your head. This origins from bad posture, typically from a screen-based job. Some exercises that help in these area, according to my physical therapist, are bending over your head as much as possible. Hold this position for 10 seconds. Then move your head back, such that you make a double chin. Also hold this for 10 seconds. The more you do these exercises, the better. They should strenghten your neck musculature. This way, you will develop a flexible neck.

markhollis | 5 years ago | on: Managing an underperformer who thinks they’re doing great

I got another perspective. I was/am someone who is labelled as an underperformer by my boss. I work at a electronics production firm, where I did some programming work. During feedback season, I was moved departments. Now I just do soldering, all days long.

What do I do in my situation? I feel like being in despair. I feel like I don't have any other options. Clearly, this situation feels like suicide for my career.

I was recently diagnosed with ASD, bipolar disorder type 2 and depression, for what it's worth.

markhollis | 5 years ago | on: Ask HN: Learning about philosophy

The author of Existential Comics offers some advice:

https://existentialcomics.com/blog/1/How_to_study_philosophy...

I like courses or philosophical works, which focus on a common themes, common threads. That allows one to see more connections across different thinkers.

One instance of this is John Vervaeke's Awaking from the meaning crisis (which isn't only philosophy, but also cognitive science).

Other courses like that are those from John Searle (philosophy of language, philosophy of mind).

Hubert Dreyfus has a course on existentialism in literature and film.

Thinking of it, there is also a channel called Like Stories Of Old. The maker publishes video-essays, which are often philosophical in tone and reference existential thinkers like Kierkegaard.

My own journey into philosophy started with Wittgenstein (apart from an introduction in Greek Philosophy in high school).

markhollis | 5 years ago | on: On Being Bipolar

I am sorry. I meant Autism Spectrum Disorder. ASS is the acronym in my native language, I mixed it up.

markhollis | 5 years ago | on: On Being Bipolar

I was a month ago diagnosed with bipolar type 2, together with ASS. I experience sleep problems. Some feelings in this article are familiar. To me, it was the feeling of being excluded for life from people. Also I am going through work problems. I find myself at a difficult place in life now...

markhollis | 5 years ago | on: How can you make subjective time go slower?

Some days ago I saw a video that suggested that subjective time seems to be slower when we are younger because our neurons are firing more actively. As we grow older, they tend to fire less. Anyway, it is just one aspect.

markhollis | 5 years ago | on: Who Is Alexander Grothendieck? (2008) [pdf]

I'm also learning some algebraic geometry at the moment:

Some resources I have used are:

* video lectures by Richard Borcherds

* Lecture notes by Andreas Gathmann (https://www.mathematik.uni-kl.de/~gathmann/class/alggeom-200...)

* This blog: https://rigtriv.wordpress.com/ag-from-the-beginning/

* An infinite large napkin, by Evan Chen (https://venhance.github.io/napkin/Napkin.pdf)

It also found it helpful to learn some (algebraic) number theory, to get a sense of where some of the motivation comes from (e.g. elliptic curves, modular forms). Grothendieck's work is abstract, but he was always motivated by concrete problems (e.g. Weil conjectures).

markhollis | 5 years ago | on: The Haskell Elephant in the Room

I'm not an expert and I don't do value judgments, but I think he's talking about something called 'smart contracts'. Haskell would make it easier to verify smart contracts. I thought he was talking about use cases like those as Cardano and with "some of the very founding contributors" he meant Philip Wadler (amongst others).

EDIT: didn't want to imply that Cardano is a shady company.

markhollis | 5 years ago | on: Friedrich Hayek on Evolution and Spontaneous Order (1983) [video]

The Mont-Pelerin society was established in 1947 by Hayek to promote more liberty with the world elites. There are pictures of him on the first conference with Mises. I'm genuinely curious what relative stability and prosperity you refer to. This was after the second world war.

markhollis | 5 years ago | on: Logic, Before ICs

My analogue design engineer colleague still uses this approach. One rationale I have heard him say is that he prefers to do things with transistors instead of logic ICs because of the direct availability of transistors, compared to ICs. It's an advantage when doing repair. You always have transistors laying around.

However, when you need to repair ICs on a PCB, you need a specific IC doing your function, which you may not have in stock. I wondering why the argument doesn't apply for transistors. The assumption seems to be that it doesn't matter much which transistors are used.

I don't know if anyone can validate what my colleague is saying.

markhollis | 6 years ago | on: Volkswagen explores using 3D printers to produce ventilators

I've been following the developments of these ventilators pretty closely, particularly of these using a ventilator for multiple patients.

The hard part is not the ventilation mechanism itself, but the specifications. Those ventilators must be controlled precisely, they must take into account the characteristics of COVID-19 patients. There is some overlap with ventilation for ARDS. The more you read into this subject, the more you realize how absolutely scary it is to actually design such a project. Lots of parameters have to be taken into account.

Read on mechanical ventilation. https://en.wikipedia.org/wiki/Mechanical_ventilation

3D printed parts that where the air flow through must be air-tight.

markhollis | 6 years ago | on: Luis von Ahn, co-founder and CEO of Duolingo

That last sentence is exactly what I like about Duolingo. 716 day streak here. Without Duolingo, I would not have commited to at least some minutes spending with a foreign language. Now I can at least give directions in French. I managed to have 8 years of French at school without being able to do that in the end.
page 1