Tag: explainer

All the articles with the tag "explainer".

• Grover's algorithm, explained with a phone book

  Published:Apr 25, 2026 |  at 09:10 PM

  How Grover's algorithm finds a needle in an unsorted list in about sqrt(N) steps, with a 4-item worked example, Qiskit code, and what it means for AES.

• A qubit is not "0 and 1 at the same time"

  Published:Apr 11, 2026 |  at 09:15 PM

  The usual one-line explanation of a qubit gets the most important part wrong. Here is the version that actually helps, built on amplitudes and interference.

• Attention, drawn by hand

  Published:Mar 28, 2026 |  at 09:40 PM

  Queries, keys, values, softmax and the causal mask, worked out with a four-word sentence and vectors small enough to compute on paper.

• How a word gets meaning inside a model

  Published:Mar 21, 2026 |  at 09:05 PM

  From token IDs to embeddings to the residual stream, why king minus man plus woman lands near queen, when it fails, and what a dimension actually means.