Hazeconomics of running

1 hour zone 3 running at PM2.5 of 50 ug/m3

=

1.5 days of US EPA 9 ug/m3 baseline exposure

Or

3.0 days of WHO 5 ug/m3 baseline exposure

"Scales linearly" - kinda

indoor running track HVAC

I was curious about indoor running track HVAC. Unchecked gross cooling load for a track :

- 200m, 4 lanes wide and tall

- maintaining 4C below ambient of 28C - 32C

- 50 zone 2 runners

- (a) 1kW occupants, 0.5 air changes per hour

- (b) 24kW, 12 ACPH

Answer : 2HP to 42HP of AC

mechanistic interpretability ⊂ linguistic analysis

 https://already-clean.goodfire.com/

Comments from chat. 

1.

Found a bug :

```

With less room, the network doesn’t fold unrelated things together; its neurons just cover coarser-grained concepts, like one car neuron covering many kinds of car.

```

2.

It's tautologous, and indistinguishable from the fundamental concern of analytical philosophy : all concepts are arbitrary consensuses (variously leaky abstractions), in practice we simply have to figure out an implementation of a concept means. There is no platonic form.

3.

"Human recognised" is an arbitrary consensus.

4.

"fold unrelated things together" 

And

"Cover coarser-grained concepts" 

Are the same predicate, from my limited POV. So i will pause my engagement with disagreements on that, and let you carry on ...

5.

Semantic pedants of my variety find most people agreeing that words have fixed meanings. We disengage because we simply do not accept that.

6. ( Now aside. )

Didn't want to flood the group.

Well. I thought the whole thing was just a compression issue. Saying X is reactive to multiple inputs for unknown reasons is the same as saying, Y carries many meanings in natural language.

The activity of analysis is simply to increase the storage media, so that the compression can be reduced and the differences reified

Linguistic analysis ⊃ mechanistic interpretability 

Same thing

Because the answer is not in the symbols of input and output

But in the operations on the symbols, carried out in between

7.

Yes. The nature of such missions is unique to the implementation.

That's what makes people interesting, human or otherwise. 😂