Lenses

Six lenses, or so-called boundaries. I argued in my first letter that knowledge is not divided; a reader still needs a door to come in by. The names belong to the sun above.

First Light Philosophy One idea from philosophy, looked at before the day gets busy. Ancient and modern, made my own, and tested against ordinary life. Equinox Abstract games Two players, a board, an equal start. Rules, positions and the design of games in which there is nothing to blame but yourself. Zenith Work The sun at its highest. What I am building, the problems it exists to solve, and what the work teaches that I use everywhere else. Solstice Archaeoastronomy Stones, horizons and the sky the builders watched. How people without telescopes caught the turning of the year, and what they thought it meant. Heliotrope Living well Named for the plant that turns to follow the sun. A phone with no apps, food counted carefully, training, rest: the rules I have chosen to live by, and which of them are really physics. Afterglow Everything else The light that stays after the sun has gone. Whatever did not fit anywhere else, and the only lens with no rules.