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Search: Posts Made By: retina
Forum: Lounge 2021-11-29, 01:06
Replies: 1,529
Views: 161,284
Posted By retina
Please note the use of "and".Which BTW, all of...

Please note the use of "and".Which BTW, all of those can be reduced by exercise.

So perhaps locking people down and restricting/banning exercise might have the long term effect of reducing...
Forum: Lounge 2021-11-28, 20:30
Replies: 1,529
Views: 161,284
Posted By retina
So does heart disease, stroke, cancer and car...

So does heart disease, stroke, cancer and car accidents. All of those kill more than covid-19, much more.

But we don't see those mentioned in the news because they are mundane and boring. The news...
Forum: Hardware 2021-11-25, 01:25
Replies: 29
Views: 2,636
Posted By retina
This is well known. It is as easy as...

This is well known.

It is as easy as removing a single file during installation and Win11 will install and run fine without any TPM or other hardware things that MS claims are necessary.

It is...
Forum: Homework Help 2021-11-14, 23:59
Replies: 2
Views: 301
Posted By retina
All known perfect numbers can be derived from...

All known perfect numbers can be derived from Mersenne primes, (2^p-1)*(2^(p-1))

In base 2 the log is approximately 2p-1, so for all known MP the magnitude of the first logs are no larger than 9...
Forum: Hardware 2021-11-05, 21:54
Replies: 88
Views: 7,635
Posted By retina
That suggests a 1:15 parity/memory ratio. Which...

That suggests a 1:15 parity/memory ratio. Which is what ... 16 parity bits to 240 memory bits?

That would be a bit weaker than the normal 8:64 ECC. But it is doable.

How would that be laid out...
Forum: Lounge 2021-11-02, 08:17
Replies: 1,172
Views: 120,585
Posted By retina
People that trust the bank with their money are...

People that trust the bank with their money are such pushovers.
Forum: Lounge 2021-10-31, 22:26
Replies: 42
Views: 1,053
Posted By retina
On the Moon, without a significant atmosphere, I...

On the Moon, without a significant atmosphere, I think you wouldn't need a tube, just a flat opaque light block of some sort below your field of view would be enough. Wait for your iris to adjust and...
Forum: Lounge 2021-10-31, 03:48
Replies: 42
Views: 1,053
Posted By retina
So the trick is the recognise that the lunar...

So the trick is the recognise that the lunar orbit around the Sun is a wobbly* ellipse, and not a simple ellipse.

The main reference point is the Sun, as already mentioned so if there is a method...
Forum: Homework Help 2021-10-29, 23:54
Replies: 15
Views: 1,303
Posted By retina
It can be even simpler with just shift and add. ...

It can be even simpler with just shift and add.

But with the exponents used here all this extra code is overkill. Simple TF and done in a few (milli?)seconds.
Forum: Number Theory Discussion Group 2021-10-29, 23:37
Replies: 9
Views: 474
Posted By retina
It depends upon your threshold for "probable". ...

It depends upon your threshold for "probable".

Consider this test for probable compositeness: N is input. Output "PRC".

I don't even need to use N, and for "most" inputs the answer will be...
Forum: Lounge 2021-10-29, 03:15
Replies: 407
Views: 63,227
Posted By retina
Check the whois info for when the site was...

Check the whois info for when the site was registered.

Although even that is unreliable. Domain names can be parked for a long time until someone decides to use it. So probably it is just the...
Forum: Miscellaneous Math 2021-10-26, 04:23
Replies: 26
Views: 1,421
Posted By retina
This is just the information time-travel ontology...

This is just the information time-travel ontology paradox thing, right?

You take some information back in time and give to someone to invent some new (for that time) thing. Then after time passes...
Forum: greenskull 2021-10-26, 00:11
Replies: 35
Views: 914
Posted By retina
For SciFi series then "Lexx" might be of interest...

For SciFi series then "Lexx" might be of interest to some here.

And in the same line of interest then "Future Man", and further along that line "The Strangerers".

And back into slightly more...
Forum: greenskull 2021-10-25, 23:01
Replies: 35
Views: 914
Posted By retina
It is a terrible movie. Sappy nonsense.

It is a terrible movie. Sappy nonsense.
Forum: greenskull 2021-10-25, 17:19
Replies: 35
Views: 914
Posted By retina
I think for recent English SciFi movies "The...

I think for recent English SciFi movies "The Martian" and "Gravity" are worth a mention.

Both have technical/physics flaws but it really doesn't matter IMO. There needs to be something to drive...
Forum: FactorDB 2021-10-23, 20:51
Replies: 26
Views: 3,589
Posted By retina
Forget about the police, or other legality...

Forget about the police, or other legality "solutions". They are not the way to deal with it.

The real problem is that FactorDB doesn't make it clear that querying a number also places it into the...
Forum: Software 2021-10-22, 19:54
Replies: 16
Views: 700
Posted By retina
I don't see any problem. ...

I don't see any problem.

https://xkcd.com/license.html
Forum: Lounge 2021-10-22, 19:24
Replies: 407
Views: 63,227
Posted By retina
That would be $0 and you can add as many...

That would be $0 and you can add as many following zeros and/or dots and/or commas as you want, the amount won't ever change, that is what they will give you.

Actually, not that's quite accurate,...
Forum: Science & Technology 2021-10-22, 08:45
Replies: 6
Sticky: Poll: COVID vaccine type poll
Views: 660
Posted By retina
:lol: I'm reasonably sure I haven't even...

:lol:

I'm reasonably sure I haven't even stated if I have been vaccinated or not.

But the poll is flawed because it is only possible to choose one option.
Forum: Lounge 2021-10-22, 02:27
Replies: 100
Views: 16,754
Posted By retina
That would appear to be what you wanted to...

That would appear to be what you wanted to happen.So that was your choice.

Deal with it.
Forum: Astronomy 2021-10-21, 02:33
Replies: 29
Views: 2,705
Posted By retina
We have a conflict.There are a lot of currency...

We have a conflict.There are a lot of currency symbols in the title. Maybe some people can learn something new from those, while also learning about the ₸€₺€$¢¤₱€?
Forum: Marin's Mersenne-aries 2021-10-20, 00:38
Replies: 29
Views: 424
Posted By retina
Haha, That is like saying "you are making me...

Haha, That is like saying "you are making me unhappy". But it isn't anyone else controlling your emotions, it is only you that can do that.

Your time is controlled by you. No one else. I am not...
Forum: MattcAnderson 2021-10-18, 08:53
Replies: 24
Views: 1,025
Posted By retina
To make the set enumerating easier for you next...

To make the set enumerating easier for you next time:

Since there are 5 known Fermat primes then you can take all the 5-bit binary numbers from 00000 to 11111 (32 in total) and replace each 0 with...
Forum: greenskull 2021-10-16, 02:29
Replies: 54
Views: 1,435
Posted By retina
I don't see why not. We can map "no picture" to a...

I don't see why not. We can map "no picture" to a user, in the same way mapping "a picture" to a user. Even the empty set is a valid set.

Although the outcome is meaningless, but whatever.
Forum: greenskull 2021-10-16, 00:23
Replies: 54
Views: 1,435
Posted By retina
You missed at least one category. 5. No...

You missed at least one category.

5. No picture.

And I suspect the pseudo-psychology analysis that followed is not too dissimilar to the standard horoscope fare of everything matches everyone...
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