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Colin O'Brien
21K posts
@InsanityBit

Colin O'Brien

@InsanityBit
SecEng @tines_hq Previously: SWE @Datadog CEO/ Founder of @graplsec SecEng @Dropbox SWE @Rapid7
New York
insanitybit.github.io
Joined June 2012
487 Following
2,690 Followers
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  • @InsanityBit
    Colin O'Brien
    @InsanityBit
    12h
    Same model AWS uses for Firecracker - two tenants never share a CPU core.
    @exedev
    exe.dev
    @exedev
    15h
    Sharing a CPU core comes with a security tradeoff. At exe, your team’s VMs can share cores with each other. Other teams’ VMs stay separate. And if your own VMs need that separation too, your team admin can turn sharing off. Ian explains how it works: blog.exe.dev/crossing-the-h…
  • @InsanityBit
    Colin O'Brien
    @InsanityBit
    20h
    look how dumb this shape is, the world is a disgusting place
    @_ManaA2006
    Square Packing Fan
    @_ManaA2006
    Oct 6
    The optimality of the packing for 11 squares has been formalized in lean thanks to Astra and Claude! Huge thanks to @ojoshe, @kleddamag, @wand_125, @guzhou0806, and @ctjlewis for aiding in the process. Image credit: jlevy.github.io/squares/cases/… 1/n
    1
  • @InsanityBit
    Colin O'Brien
    @InsanityBit
    Oct 6
    I think it's interesting that literally all 4 of these are incorrect but it has roughly 8.1k likes. *Literally all 4* are wrong.
    @EneaszWrites
    🐾Eneasz Brodski
    @EneaszWrites
    Oct 5
    the "Hard Problem" in a nutshell: 1. atoms aren't conscious 2. humans are made of atoms 3. humans are conscious 4. so at least one of 1-3 must be false Panpsychists say #1 is false Dualists say #2 is false Illusionists say #3 is false Materialists say #4 is false
    1
  • @InsanityBit
    Colin O'Brien
    @InsanityBit
    Oct 6
    This is why I never learned to play an instrument. I remember having to practice drawing this garbage in school and it absolutely ruined it for me.
  • @InsanityBit
    Colin O'Brien
    @InsanityBit
    Oct 6
    Look at the replies. This is the issue with the rust community these days. 10 years ago this would be uncontroversial (compile times are always a top issue in the survey). But on twitter, no, your code must be bad!
    @abdimoalim_
    @abdimoalim.bsky.social
    @abdimoalim_
    Oct 5
    Rust build times are fucking dogshit and the community's response is always some loser explaining why waiting 40 seconds for a one-line change is actually a good thing, the Stockholm syndrome around this shit is genuinely impressive.
    1