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I agree that the OP definition is not quite right, but both your A and B examples have two errors. Yes a zero error is a systematic error but it is not due to a wrongly marked or non uniform graduation and yes it can result in an increased or decreased actual measurement. A simple example of a zero error would be dirt on the pan of an otherwise accurate weighing scale.

Burettes are filled to the zero mark which is at the top of the graduations on the tube. The graduations increase downwards from this zero so indicating the amount run out when the tap is closed and the new level of liquid is read off.

'Zero error' is the degree of error at the zero mark. Does that agree with the statement you posted?

It seems slightly off from what I recall. I'll try a hint since this is homework section: A: Let's say an analog meter shows 101 when value really is 100. The same meter shows 0 when actual value is 0. Does that indicate that the meter have a zero error or not? B: Lets say a meter shows -1 when actual value is 0. The same meter shows 100 when value really is 100. Does that indicated that the meter have a zero error or not? I would say that your definition states that A and B above are zero errors. AFAIK only A or B is a zero error.

As I think your project is very worthwhile I have been giving some serious consideration to explain my tiling comment. +1 I have been rather busy today but I will post soon on that, using these pillars of Maths Arithmetic, Algebra, Geometry and set Theory in relation to trigonometry and symmetry. Meanwhile perhaps you would like to think about this category ? Mathematical notation and symbols. This is often the Cinderalla category, but it pervades all of Mathematics.

Apologies for the delay, I think that it is a good idea. It would reduce the amount of complexity and work required to make this thing. Thinking about the project now I am probably going to start off by creating a layman's mapping based on what I currently know then expand it with the help of others as I mature my knowledge in mathematics.

Well, I'll be damned. One wave of the hand, and 5+ billion of us, who just happened to be born into non-Christian cultures, sentenced to burn in hell for all eternity. Makes me wonder just which of those two guys to blame, really.

If they had that capability already, what are the odds they don't know about us? And what is the gain to be had of taking our planet, if that can't happen for up to 10,000 years? (1000 LY at 0.1c) It's an interesting conundrum. You launch a takeover bid, but the target has many generations to innovate and invent while you are on your way. You might have been the more advanced species when you initiated the attack, but that may not be the case when you arrive.

And to add to this, after all my years on amateur science forums, there are two other crucial problems I see: 1. People often develop an intense focus on one particular or narrow point/source/information, and may even possess a good grasp on it; but then they fail to understand how it fits into a larger context. For example, I have met lots of people who have a good handle on Minkowski spacetime (SR), but then they naively try to add in gravity, and fail to understand why this does not work. Or people who become almost obsessed with one paper by one author, without grasping the context in which it was written, and thus draw the wrong conclusions from it. Nothing in the sciences stands in isolation, knowing and understanding the larger context is as important as any individual piece of knowledge. 2. Too many people seem to be entirely unable to distinguish valid sources of scientific information from pop-sci, personal opinions, or outright woo. Access to information is useless - even dangerous - if one is not equipped to judge the scientific value (or lack thereof!) of it.

! Moderator Note This is more suitable for the Lounge. Note that the idea of a good illusion is of course to make it difficult for the viewer to figure out how it is done. It would be quite a jump to suddenly conclude that magic is real (unless you believe that there a lot of uncles with detachable thumbs).

Since no one brought up the mainstream answer to that question, yet: Consider the journals that the sources you are citing were published in.

An omnipotent being can do whatever they want.

! Moderator Note One is science and one isn't. You already have one thread that has rambled on incoherently for 11 pages. I don't think we need another one.

Looks like someone beat you to it: https://www.quantamagazine.org/the-map-of-mathematics-20200213/

He has used non-Godly humans in the past to accomplish a need (Israel was led to the Promised Land by a lost person) and seems like He may sometimes use other lost people. The earth was given over by Adam to Satan and God chose not to override the choice between Adam and Satan. He had to die to allow humans salvation. Presently Satan owns the earth and all who do not wish God to be their savior.