ricdeh

joined 2 years ago
[–] ricdeh 8 points 11 hours ago

He controlled it with Neuralink

[–] ricdeh 24 points 11 hours ago (14 children)

Good, but how can you make cat noises with an accent? Feel free to provide examples :)

[–] ricdeh 8 points 1 day ago

Again, moderation does not equal censorship. If you think otherwise, you belong right with Musk.

[–] ricdeh 4 points 1 week ago

What an incredibly enlightened comment.

[–] ricdeh 11 points 2 weeks ago

Not entirely true. Humans have successfully modified the genome of plants and especially bacteria in a targeted way for years now. But things are of course much more complex in humans and vertebrates in general.

[–] ricdeh -2 points 2 weeks ago (3 children)

Eigentlich ein guter Kommentar, aber warum "illegal" in Anführungsstrichen? Zweifelst du an, dass es illegale Einwanderung gibt?

[–] ricdeh 5 points 3 weeks ago

Holy shit that concept art looks so beautiful

[–] ricdeh 3 points 3 weeks ago (1 children)

No, they are not for you to reevaluate because you hold no knowledge or expertise in these fields. Demanding for outsiders to interfere with the scientific process because of their silly little biases and mental disabilities is a deranged opinion.

[–] ricdeh 3 points 1 month ago

Untrue. There are small models that produce better output than the previous "flagships" like GPT-2. Also, you can achieve much more than we currently do with far less energy by working on novel, specialised hardware (neuromorphic computing).

[–] ricdeh 1 points 1 month ago (2 children)

No. Windows embodies the antithesis to computing freedom. This alone makes it evil and means it should be destroyed.

[–] ricdeh 2 points 1 month ago* (last edited 1 month ago)
30
submitted 4 months ago* (last edited 4 months ago) by ricdeh to c/nostupidquestions
 

So I understand that the subnet mask provides information about the length of the routing prefix (NID). It can be applied to a given IP address to extract the most significant bits allocated for the routing prefix and "zero out" the host identifier.

But why do we need the bitwise AND for that, specifically? I understand the idea, but would it not be easier to only parse the IP address ~~string~~ sequence of bits only for the first n bits and then disregard the remainder (the host identifier)? Because the information necessary for that is already available from the subnet mask WITHOUT the bitwise AND, e.g., with 255.255.255.0 or 1111 1111.1111 1111.1111 1111.0000 0000, you count the amount of 1s, which in this case is 24 and corresponds to that appendix in the CIDR notation. At this point, you already know that you only need to consider those first 24 bits from the IP address, making the subsequent bitwise AND redundant.

In the case of 192.168.2.150/24, for example, with subnet mask 255.255.255.0, you would get 192.168.2.0 (1100 0000.1010 1000.0000 0010.0000 0000) as the routing prefix or network identifier when represented as the first address of the network, however, the last eight bits are redundant, making the NID effectively only 192.168.2.

Now let's imagine an example where we create two subnets for the 192.168.2.0 network by taking one bit from the host identifier and appending it to the routing prefix. The corresponding subnet mask for these two subnets is 255.255.255.128, as we now have 25 bits making up the NID and 7 bits constituting the HID. So host A from subnet 192.168.2.5/25 (HID 5, final octet 0000 0101) now wants to send a request to 192.168.2.133/25 (HID 5, final octet 1000 0101). In order to identify the network to route to, the router needs the NID for the destination, and it gets that by either discarding the 7 least significant bits or by zeroing them out with a bitwise AND operation. Now, my point is, for identifying the network of which the destination host is part of (in this case, the host is B), the bitwise AND is redundant, is it not?

So why doesn't the router just store the NID with only the bits that are strictly required? Is it because the routing table entries are always of a fixed size of 32 bits for IPv4? Or is it because the bitwise AND operation is more efficiently computable?

 

A signal handler race condition was found in OpenSSH's server (sshd), where a client does not authenticate within LoginGraceTime seconds (120 by default, 600 in old OpenSSH versions), then sshd's SIGALRM handler is called asynchronously. However, this signal handler calls various functions that are not async-signal-safe, for example, syslog().

 

I recently wanted to buy a product from a manufacturer and luckily they offered PayPal as a payment method. However, after I signed into my PayPal account, it wouldn't show my bank account as a payment option and instead prompted me to add a card or bank account, despite my account being fully confirmed and direct debit activated. PayPal customer service reps told me that maybe the retailer blocked direct debit through PayPal and I should try adding a credit card, however, why would they do that if they offer non-PayPal direct debit anyway? The customer service reps further told me that my account was in good standing, so there shouldn't be any problems with trust etc. Have you ever encountered an online shop that refused direct debit when handled by PayPal?

16
submitted 8 months ago by ricdeh to c/linux
 

Do you think it will be possible to run GNU/Linux operating systems on Microsoft's brand new "Copilot+ PCs"? The latter ones were unveiled just yesterday, and honestly, the sales pitch is quite impressive! A Verge article on them: Link

 

"While developers start work on building Vision Pro apps, the potential for people upgrading to the iPhone 15 this year is a big reason for investor optimism."

 

"The IARC will reportedly classify aspartame as a possible carcinogen. But this isn’t a food safety agency, and the context matters."

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