David McCarthy 🇺🇦
@totalutility.bsky.social
Philosopher, likes ethics, epistemology, uncertainty, welfare economics, category theory, climbing 🇺🇦
UK maga's explanation of a feedback loop:
anything that looks like A -> B -> C
anything that looks like A -> B -> C
Reform UK’s Councillor Dave Poole has put out this bizarre graphic littered with spelling errors.
Our favourite part is where it says Reform UK keeps being called the ‘fat right’.
Our favourite part is where it says Reform UK keeps being called the ‘fat right’.
October 5, 2025 at 2:11 PM
UK maga's explanation of a feedback loop:
anything that looks like A -> B -> C
anything that looks like A -> B -> C
They say that all philosophy is footnotes to Plato, but in fact he merely pre-plagiarized us
Oh fuck he stole (in advance, in 2014) my Paul Revere reference, in exactly the same context (quantum entanglement). Bastard!
August 20, 2025 at 1:22 PM
They say that all philosophy is footnotes to Plato, but in fact he merely pre-plagiarized us
Algebraic geometry is monkey business
Children build math skills on a “cognitive bridge” between space & number. But where does it come from? Our new study finds monkeys transfer learning and abstractions across geometry & numerosity, revealing the evolutionary roots of basic math development. 🧪🧠
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
Cognitive bridge between geometric and numerical learning in monkeys | PNAS
Educational research highlights strong developmental links between numerical and spatial
cognition in humans, often shaped by cultural tools like t...
www.pnas.org
August 20, 2025 at 1:00 PM
Algebraic geometry is monkey business
Posterity not being kind to Frege
(From Manin, *A Course in Mathematical Logic for Mathematicians*)
(From Manin, *A Course in Mathematical Logic for Mathematicians*)
June 26, 2025 at 3:15 PM
Posterity not being kind to Frege
(From Manin, *A Course in Mathematical Logic for Mathematicians*)
(From Manin, *A Course in Mathematical Logic for Mathematicians*)
Getting the feeling that I’ve found a book about rings of continuous functions
June 26, 2025 at 2:58 PM
Getting the feeling that I’ve found a book about rings of continuous functions
From MathOverflow: apparently what you tell five year olds when they ask what adjoint functors are.
January 9, 2025 at 8:46 AM
From MathOverflow: apparently what you tell five year olds when they ask what adjoint functors are.
What's wild is how common the identity element is. Imagine being a complex polynomial and a permutation of three bananas.
Its like how pi is always showing up all over higher math. It occurs in number theory as the prime-counting function, frequently appears as projection map of fibered bundles, and its all over the arithmetic hierarchy.
The Fibonacci sequence appears throughout nature. For example, in the Earth's orbit around the sun, first it makes one complete revolution. Then one more. Then two more, then three more, then five more, and so on.
November 27, 2024 at 4:14 AM
What's wild is how common the identity element is. Imagine being a complex polynomial and a permutation of three bananas.