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Edit: I dropped the points on the details, just to focus on the main point. Rest assured that I read the paper, I was arguing in good faith, and that after a bit more thinking I understand your criticism of my interpretation. I don’t think the criticism of the research being unable to generalized is warranted, considering the experimental design. But we aren’t going to agree on that. The difference in our thinking seems to be the probability of the similar effect showing up in daily lives. I know the projector was emulating the coded display, but my point is that it was reasonably easy to do it, and the same setup could conceivably show up easily in different way. Not to mention that the researchers specifically said all the displays in their office had the effect, so it is common within displays itself.

I think if we continue talking, we will keep running in circles. So let’s drop the details on research: it is there, we can both read it. Here is what I was trying to convey since the beginning:

- If you think the (original) article is an ads, with the writing not up to scientific standard: sure, I am ambivalent about the article itself

- If you think the gist of the article and their recommendation is wrong, I mildly disagree with you

- If you think led-flickering affecting people is in the same ballpark of concern about Wifi or GMOs, I violently disagree with you.

LEDs are new, and so the high frequency related research are not too numerous, but for the few exist, they generally point to a higher threshold of perceiving than previously thought. As for the health-effect, I believe that part is more extrapolation than researched (since those can only come after the more generic research on perceiving). So the final assessment is: how bad was the article in presenting information the way they did.

The paper's motivation is to explore the new coded display, and they are doing that by exploring an aspect that they care about. That aspect is very specifically well-defined, and if you want to show whether a display has the same effect or not, then we need to look into it. But at no point is the experiment itself relating to any kind of display tech.

I mean, they are not even using a screen during the study, they are using a projector. How are you going to even make the claim that this is display technology specific when it is not using a display?!

That is just the motivation, the experiment is much more general and is not related to display technology:

The work presented here attempts to clarify “the rate at which human perception cannot distinguish between modulated light and a stable field

Otherwise, they would have tested the dithering directly for the full image. Here they are testing a more simpler model: varying flickering causes higher flickering-free requirements (due to eye movements). This would applies to dithering, but potentially other situations.

What they are trying to do is recreating the situation that is more similar to actual light sources in computer screens and TV (varying flickering rate from different pixels/ areas). They are saying that the current threshold of 65Hz commonly reported are tested on light sources that are uniformed in flickering, which is not the case for actual screens. It is not about dithering.

Basically the claim is that when there are varying flickering frequency, the requirements for non-flicker frequency is much higher.

Look, they sourced their claims (quite literally, they put how they calculate, from which standard). And linking to the correct document is literally how scientific citation works — I replied the page to you above anyway.

If you want to redo the numbers and check if they fit the definition, please feel free to do so, but you will need to put some works in (since the flicker hz -> risk showing in the article is a computed value, you need to find the modulation value and plug it in too)

I understand your fight and your idea, I am just saying that in this specific instance, this is not a fight to be fought. The article is generally correct, and if you want to complain about the writing style or it being an ads, it’s up to you. But this is not the same situation with GMO stuffs

The “very/moderate high” comes from the standard itself, which is quantified within the standard. In the context, it is about the probability of having issues, while the effect (mild to catastrophic) is another axis. Considering that they stick to the “official” wording and seeing the criticism, I am not even sure if they can change to a more “lay-person” friendly and be acceptable to all the critics.

The standard also linked to the researches during their discussion.

Please read it, instead of just randomly throw out things hoping that they supported your argument.