[symic]

A computer can’t display more digits than the number of particles in the observable universe. This is a finite number. As such it is correct to say that computers struggle if the number of digits is too large. While for practical uses modern computers don’t struggle with finite integers one normally encounters they do struggle with precision in certain circumstances. For 3rd graders I think it’s OK to introduce them to the concept that computers, like all devices, have limitations.

[musicale]

> A computer can’t display more digits than the number of particles in the observable universe. This is a finite number. As such it is correct to say that computers struggle if the number of digits is too large

There are two sources of error here:

1. Your interpretation is essentially "computers struggle to complete tasks that are impossible for them to complete" - a meaningless tautology. At best it is "nothing scales infinitely" which perhaps is a bit more useful as a refutation for complaints that something "doesn't scale" in an unlimited fashion, but that doesn't seem to be the context here.

2. "Too large" is ambiguous. If it's "too large for computers to handle" then it devolves into the above meaningless tautology. However, a sensible and common interpretation would be to interpret "if <something> is too large" as "if <something> is very large" - but we know that computers can in fact handle numbers with huge digit counts (somewhere between 1 and 60+ million.)

So the original statement is either a largely meaningless tautology or something that is misleading and/or incorrect. PP's criticism is valid.

[symic]

I think you don’t tech professionally.

[light_hue_1]

I teach professionally.

You don't need to tell kids things that are misleading nonsense. It only confuses them more. You can be precise and high level at the same time.

In no sense do computers struggle with digits. That's a misleading confusing statement and it's not appropriate at any age.

[musicale]

> I think you don’t tech professionally.

I don't know whether you mean "teach" or "tech" here, but this seems to be an ad hominem argument.

Regardless, I would submit that clarity and correctness matter both in teaching and in tech.

[symic]

It’s not an ad hominem. It’s a polite way to suggest that you don’t know what you are talking about when it comes to teaching concepts to kids. I think it’s worth your while to wonder why it is so obvious that you are not a teacher. What experience and insights regarding age appropriate explanations are you missing that make it so obvious that you don’t teach?

Correctness, of the sort you are implying are absolutely not appropriate at all levels. There’s a reason kids in second grade are told that you can’t subtract a larger number from a smaller one, for instance.

[musicale]

1. None of what you are saying removes the ad hominem aspect.

2. In grades 1-2 (iirc) we applied negative numbers when we talked about the number line (which we had on the wall.) Even preschoolers knew about negative temperatures on the thermometer.

3. See PP's original comment.