εἶδος − εἰκασία
form minus conjecture, by isopsephy
ε5ι10δ4ο70ς200=289−ε5ι10κ20α1σ200ι10α1=247
εἶδος − εἰκασία = 289 − 247 = 42
Isopsephy is the Greeks’ own letter arithmetic: α to θ are 1 to 9, ι to ϙ tens, ρ to ω hundreds. εἶδος is Plato’s word for a form, the real thing behind the shadow. εἰκασία is conjecture, the state of mind of someone watching shadows.
Form minus conjecture is 42, in the system Plato’s own readers would have used.
Rule: Greek isopsephy (α=1 … ι=10, κ=20 … ρ=100, σ=200 … ω=800).
type a word
a=1 … z=26, letters only. If it comes to 42, 91 or 133 the page will say so.