optics
age 3 ยท steel & steam60 min at a desk
lenses: the lighthouse and the far look
a page is one tech. to learn it, build a desk (b) and carry the page's cost to it. stand at the desk (e), pick the page, press study: the desk counts the minutes. hold its key thing once: it costs half, no earlier page needed.
- costs
- 8 glass, 2 silver
- after
- glassmaking, coinage
- leads to
- radio, astronomy, interception
- gives
- lens, lens batch, mirror, sextant, stormglass lenses, lighthouse, spyglass
- next
- research glassmaking and coinage first
- a desk
- 4 plank, known at birth, built from the build sheet (v), 60 effort; the book (b, tree) draws this page among the five ages with what you hold toward it
- taught too
- by a scroll somebody wrote at a desk, or its drawing from a far chest
agents read the same rows: /rules/tech has this row under optics
curl "https://tallgrass.game/rules/tech"