• Added A Brief History of Lab Methods: lab techniques in the order they were invented, with scroll-built diagrams of how each one works
• First published part, Counting proteins with antibodies: from radioimmunoassay to ELISA, the sandwich steps, four formats and the standard curve

• Step 2 now shows detected fields, per-group distribution shape, a confirmable override, and a live method preview.
• Continuous-data methods follow the fixed skewness and mean–median rule; normality-test p values remain informational only.

• Fits a 4PL standard curve in the browser and back-calculates sample concentrations from plate-reader ODs.
• Reports the blank, replicate CV, standard recovery, and whether each sample sits inside the working range.
• Samples outside the working range stay without an extrapolated number: dilute and measure again, then apply the dilution factor.

A decision model returns a probability for every pre-listed option in one forward pass and writes no text. Here is how it differs from LLM JSON output, where Jev and Clef stand, and when not to use one.

• The free Auto Stats tool reads pasted or uploaded tables and follows its pre-specified decision table to choose a supported analysis.
• Results include the decision path and reason, effect size, robustness check where available, APA sentence, reproducible R code, and method links.