n = 1000
    a = {}
    for i in range(n):
        a[i] = str(i)
    a = frozendict(a)  # O(n) operation can be turned to O(1)

I treasure the time I spend with my kids. I can see that this season will be over soon. This won't be my whole life, but it will be a significant fraction of my life. If I were immortal, this would be a tiny blip in the inconceivably far past for 100% of my life.

You may think I could start again every 100 or 1000 or million years, but if a nonzero fraction of people did that, that would be exponential growth. Even ignoring resource constraints, you cannot sustain exponential growth of any kind in a 3D universe.

A universe with kids necessitates a universe with death.

einsum only being able to do multiplication makes it quite limited. If we leaned into the Einstein notation (e.g. [1]), we could make something that is both quite nice and quite performant.

[1] https://tensora.drhagen.com/

Just last week, my two-year-old spied the freezer pops in storage. She pointed out back and said, "Eat on deck!" Clearly, she remembered eating freezer pops on the deck, but the last time she did that was last summer (northern hemisphere) when she didn't know how to talk at all, let alone say "deck".

Still, finding that a non-zero fraction of oral history survives on the order of tens of millennia is very cool.

    import users.*
    import users.User
    import users.{User, UserPreferences}
    import users.UserPreferences as UPrefs

Edit: A quick search reveals that, of course, you can still buy them today. I have not felt a need for one in ages.

Am I correct that Secure Boot purely exists to prevent this attack vector: malware gets root on the OS, hardware allows updating firmware via OS now owned by malware, but Secure Boot means you have to wipe only the hard drive instead of the firmware to eliminate the malware.

It seems like it would be a lot simpler and more reliable to add a button to motherboards that resets the firmware to the factory version (on memory that can't be written by a malicious OS).

[1] https://stackoverflow.com/a/56507840/1485877

People like Hanlon's razor because it still lets them insult people they don't like. "incompetent" and "stupid" work about as well as "malicious" and "evil". I don't think anyone will ever give a name to a statement so...unsatisfying.

And prime numbers are prime numbers regardless of base.