Manav Rathi

#til std::mem::drop is just an empty function!

fn drop(_x: T) {}

https://doc.rust-lang.org/src/core/ops/drop.rs.html#243

The "drop" happens as a consequence of transferring ownership

(and in case you're wondering, yes, I learnt of this because of the classic let _ = expr vs let _x = expr footgun; the former drops the unowned temporary at the end of the line, the latter binds so the value lives till the end of scope, and drop is the way to force the complier's hand)

#rustlang

as_ cheap borrowed view
to_ potentially expensive conversion
into_ consuming conversion

#rustlang

How many times do you chop things in half to get to a certain amount

That's -log2!

3b1b defining information aka -log2 in their latest videos (and I agree with them, log 1/2 formulation is clearer!)

#math #machinelearning

कर्मण्येवाधिकारस्ते मा फलेषु कदाचन ।
मा कर्मफलहेतुर्भूर्मा ते सङ्गोऽस्त्वकर्मणि ॥

— Gita 2.47

Action alone is your right, never the outcome. Outcomes arise from a wider causal field; you’re not the doer, nor may you attach yourself to inaction.

Came to me in a dream today. That the hidden CoTs of LLMs are not "thinking" or "reasoning", but the LLM dreaming.

#llm

so map is (a -> b) -> (f a -> f b), and_then/flat_map (a -> f b) -> (f a -> f b)

or equivalently, map is (a -> b) -> f a -> f b, and_then/flat_map is (a -> f b) -> f a -> f b, and map is fmap, and_then/flat_map is bind, but no typeclasses like #haskell, piecemeal instead)

#rustlang

#rustlang

I am riding on the limited express, one of the crack trains of the nation.
Hurtling across the prairie into blue haze and dark air go fifteen all-steel coaches holding a thousand people.
(All the coaches shall be scrap and rust and all the men and women laughing in the diners and sleepers shall pass to ashes.)
I ask a man in the smoker where he is going and he answers: "Omaha."

— Carl Sandburg, Limited (1916)

#poem

A single function — eml(x,y) = exp(x)−ln(y) — together with the constant 1 is the equivalent of a universal NAND but for mathematics

https://arxiv.org/pdf/2603.21852

I think I know what emergence means now:
https://mnvr.in/2026/emergence

I've decided to double down on em-dashes.

https://mnvr.in/2026/em-dashes

The people against AI are asking the wrong questions. This is my attempt to get them to retest their priors. Maybe I'm being naive, but here goes.

https://mnvr.in/2026/the-important-questions

#AI #llm