Mind map in 1974: Encoding

Popularised by Tony Buzan from the 1970s; older radial notes exist Yes if one claim is visible at a glance in Meta, Google and retail print; otherwise link to a full figure. Yes for lab reports and poster boards if axes, units and a source line are present. Excel or Google Sheets or PowerPoint; export SVG/PDF.

Do not rely on hue alone. Label directly and check greyscale. Mind map: honour radial branches around a central topic, and switch when you must prove a claim with evidence in order. The core mark of Mind map is radial branches around a central topic. brainstorming, revision notes, early structure

The eye compares length and position more accurately than area. PowerPoint, Excel or Google Sheets and Meta, Google and retail print share the same geometry. Decoration rarely persuades; it slows reading. Perspective distortion wrecks comparison. Keep it flat. Do not stack stories. One Mind map, one claim.