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Old 08-24-2014, 01:31 PM   #16
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Originally Posted by stf92 View Post
Then it's all a matter of getting used to. You were educated in a black-type environment, I began with the first microcomputers (and mini) who used white types. However, consider what happens in the movies. Once in a while a mad director uses black on white for the credits, but its an inveterate custom in the film industry to use white types on a black background for that purpose. Why would that be? Well, consider how much effort and study that issue must have had then, when people was for the first time exposed to an unknown medium. Is this a matter ruled by the custom too? I don't think so.
I only disagree on two small points with your analysis above.

1. It's not a matter of getting used to - the eye was not designed for monitors and we cannot get used to that. We can get used to accepting different schemes as normal.
2. on the point of black-on-white or vice versa, what upsets the eye is high brightness or rapid transitions. Apparently the eye expects a merging of colour, and high contrast provides a sudden contrast that causes eye strain. Set your contrast to maximum if you don't believe me, and perform the experiment yourself. Each brain assimilates better on one combination, but that's learned behaviour. I use ttys a lot (white on black) and am comfortable there on terminus 28 point fonts, but use xterms (black on white) to X consoles in X :-/.
Old 08-24-2014, 06:26 PM   #17
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Originally Posted by stf92 View Post
I have seen this issue in many machines not only in Slackware but on several versions of Debian, from old ones up to the most recent.

Try this: start in a text console, type some letters in lower case. Enter X. In an X window, press capslock. Now go to a text console. You are no longer in X. You'll see the LED is on but you continue typing in lowercase as before entering X. This is what I'm speaking about, and business kid got it right (though he doesn't care). Who's to blame? I'll risk an answer: the X server is.

Last edited by briselec; 08-24-2014 at 09:31 PM.
Old 08-25-2014, 04:47 AM   #18
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Once in a while, I am in a condition where I can't tolerate more than very slight brightness. I am forced to change every light bulb in the house by ones with less lumens. And under those conditions the GUI just kills me. My nervous system just can't tolerate it. This adverse stimulus is operating all time long, but under special conditions I can perceive the damage.

My only resource is to remain in the ttys, where I work with the traditional 80 columns by 25 lines. And even there, high intensity highlighted items upset me. Like the -- INSERT -- in vim or the highlighted words in tha man pages. But I remedy it by using vi instead of vim.

About the eye not being designed to read in a monitor I agree. The printed book is highly superior in this and many other respects, with the kindle thing not being an exception. As much as cinema, with its standard film grain, is way better than the electronic screen in the present state of the art, or CRT better than LCD. I've done some reading about these issues so my words are not gratuitous.


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