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Signalcrest
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devtoolsentity · corroborated across sources

simon peyton jones

for functional programmers, language researchers

Steady

18

signal score

as of 1d ago

1

live items

Too early

trajectory — needs a few more snapshots

lobsters

Why this scored 18

every term, weighted
Velocity+0.0 / 40 max

Its fastest-moving item, measured against the pace of its own source

Acceleration+8.4 / 25 max

Whether that velocity is itself speeding up, as a per-hour rate

Cross-source spread+0.0 / 25 max

How many independent communities its own items come from

Recency+9.6 / 10 max

Decays to zero over 14 days, counted from when we first saw it

Saturation penalty0.3 / 30 max

Subtracted once something is big and old — sized by its biggest item, aged from when we first saw it

Composite17.6

Weights are hand-tuned, not learned — we're calibrating them against realized trends as history accumulates. On an entity's first sighting there's no previous reading to compare against, so acceleration starts from a neutral prior rather than a measurement, and velocity falls back to engagement over its whole lifetime until a second reading exists. Full methodology

Signal history

7-day window (free)

The evidence

The live items this entity's score aggregates — every community independently talking about it right now. This is the corroboration, shown, not claimed.

  1. 117

    Simon Peyton Jones on Functional Programming, Thinking in Types, Useless Languages

    Haskell expert discusses functional programming, type theory, and language design. — for functional programmers, language researchers

    lobstersdevtoolsSteady2d ago