User talk:73.47.111.245

Hi, I'm an engineer and I love science communication. Always open for constructive criticism and discussion.

Have a lovely day <3

Recommendation

(If I'm somehow not logged in, this is Redacted II)

If you intend on being a long term (not on and off over a long period of time), I highly recommend making a dedicated account, since IPs change over time. Redacted II (talk) 03:28, 12 June 2025 (UTC)

Hey RedactedII! Hope you are doing well. I tend to move around different continents often these days - maybe I'll make a dedicated account, particularly if it will be less of a red flag to other editors. Honestly though, I've never had trouble constructively contributing before, and I couldn't care less about the "clout" or whatever.

Regarding IP.... Trust me, I know - why do you think I have an IPv4 address?

BTW, it's inaccurate to say IPs change over time - any commercial user expects to have a static IP, whether it be IPv4 or IPv6. Many have had the same IP for many many decades. Are you familiar with 8.8.8.8? It's been pointing to public Google DNS servers since 2009, and will almost certainly never change, barring a catastrophic collapse of Google. If you're curious why they chose that number, well read a bit about 8 being lucky.

Historically, everyone had a static IPv4 address. Even in large universities that had huge IP blocks (/8 or larger List of assigned /8 IPv4 address blocks), they would rarely have DHCP. In the few that did, the DHCP would record your MAC address and typically store it indefinitely, so next time you connected with the same NIC you would be automatically assigned the same IPv4 address.

That said, you are correct that most entry level residential ISPs with no SLA (service level agreement) will change your IP at will - heck, we ran out of IPv4 addresses a long time ago. For most people, all local devices must use 10.xxx.xxx.xxx or 192.168.xxx.xxx or 172.16.xxx.xxx for their local IPv4 devices on the LAN, which is NAT'd to the WAN that ties into a backbone using protocols like BGP.

I learned the OSI model when it was still taught as 7 layers (now it's typically taught as 5 layers), at MIT, when they still owned the entire 18.xxx.xxx.xxx block. Those were good times; well into the mid 2010s you could stroll in and plug a CAT5 ethernet cable with the good ol RJ45 into any of thousands of open in-wall ports. When they implemented WiFI IEEE 802.11b-1999 across campus, you would still be allocated a true IPv4 in that 18/8 block.

Famously (and very tragically) Aaron Swartz plugged a small computer into a closet that scraped scientific research papers from JSTOR, as the entire 18/8 block was whitelisted on JSTOR due to MIT's contract. Ultimately he was attacked by the powers at be and chose not to fight - a real travesty. This was well before large repositories of pre-publish papers were available to the public, such as ArXiv - ironically hosted by a major university (Cornell). Eventually, around 2017, MIT let go of complete control of 18/8 as they had been a full IPv6 compliant network for many years, and sold a significant portion of the 18 block to ISPs such as AT&T.

Long story short - I know how to use a network  :) You should study them as well, though simpler Differential signalling networks like CAN bus and RS-485 are more often used in aerospace.

Thanks for your input. Stay strong in your studies, stay passionate about what you care about! Just remember your perspective will always be limited, like all human beings. Think critically, and don't disregard other people's observations because they do not align with your own. Don't ever trust a slide deck meant to hype investors. You'll learn that lesson the easy way or the hard way if you pursue an engineering career. Best wishes. 73.47.111.245 (talk) 04:19, 12 June 2025 (UTC)

Trust me, having dealt with (extremely) disruptive IPs before, they change over time.

(Also, for what its worth, I trust Musk about as far as I can throw him) Redacted II (talk) 14:19, 12 June 2025 (UTC)

Also, it drives me crazy that I can't thank IPs for edits with the thank button.

So, thanks for changing the wording of the Block 4 extra RVacs. Redacted II (talk) 14:21, 12 June 2025 (UTC)

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