digits inside numbers, not number words

What this neuron does

This neuron reacts to a single digit in the middle of a number, such as the 5 in 45 or the zeros in 1,500 or 25,000. It goes quiet, or pushes the other way, on spelled-out large-number words like "hundreds" or "thousands". Turning it up or down did not give a clear new theme in the sample text.

Written by Claude from this neuron's activations and steering outputs. Confidence: medium. Think it is wrong? Flag it (opens a prefilled issue on GitHub).

Fires most on

The text windows where this neuron's activation was highest. Amber marks positive activation; the outlined token is the peak. Hover a token for its strength.

1. #1 peak

   ing.⏎location of the weather station site to be surveyed in advance. Sites are listed by name, and give an approximate lat/long to the nearest⏎hundredth of a degree, but

2. #2 peak

   Which medical conditions medical marijuana treats⏎- The impact smoking or vaping has on the lungs and other body systems⏎- Four engaging marijuana prevention units, each 45 minutes long:⏎- Marijuana and the brain⏎- Marijuana and the body⏎-

3. #3 peak

   walking distance of this marker. Montrose Park (about 400 feet away, measured in a direct line); Watching the Flames (about 700 feet away); Dumbarton Oaks (about 700 feet away);

4. #4 peak

   ,034.⏎Eureka is the largest coastal city between San Francisco and Portland, and the westernmost city of more than 25,000 residents in the 48 contiguous states. It is the regional center for government

5. #5 peak

   reduced by 500 to 750 calories. In general:⏎- Eating plans that contain 1,200–1,500 calories each day will help most women lose weight safely.⏎- Eating plans that contain

6. #6 peak

   members of the population consume no more than 2,300 mg of sodium.*** The American Heart Association recommends no more than 1,500 mg

Steering

Push this neuron up or down while the model writes, and watch what changes. The outputs were generated ahead of time, so nothing runs in your browser.

Most negative on

Where the activation went furthest below zero. Blue marks negative activation. Many neurons mean something different in each direction.

1. #1 peak

   Sun inside them! Stars only appear small in the nighttime sky because they are so far away.⏎In the long ago, astronomers once thought that stars numbered in the hundreds or thousands, instead of the now-estimated “billion trillions.” About

2. #2 peak

   , impossibly large slice of silicon that does it all. Apple’s most powerful chip to date has 114 billion transistors packed into over a hundred processing cores dedicated to logic, graphics, and artificial intelligence, all of it connected

3. #3 peak

   dots written in layers that are only a few nanometers thick that cover the surface of millions of saucer-sized spinning disks. These hard disks are stacked by the thousands in server farms worldwide.⏎In recent years, the technology for growing uniform magnetic layers

4. #4 peak

   hundred twenty-four years after it was first proposed, Kenneth Appel and Wolfgang Haken cleverly reduced the problem to checking the properties of 1,936 maps by computer. The result was hundreds of pages of hand analysis combined with thousands

Which neurons in earlier layers feed this one, and which later ones it feeds. Amber links excite, blue links suppress; longer bars are stronger.

Activation histogram

How often this neuron fires at each strength. Almost always it does close to nothing (the tall bars in the middle); the snippets above are the rare moments it fired hard, amber for positive and blue for negative.

Logit lens

The words this neuron nudges the model toward (amber) or away from (blue) when it fires. A hint, not a label: many neurons work through later layers instead.