502: inconsistent periods and plurals
On page 502 - 507, the tech tables use periods inconsistently.
Plural usage is inconsistent as well.
Examples:
On the TL 0 column, there are periods in the Society, Environ, and Comms columns, but not in the 2nd Era or Energy columns. But, if you skip TL 5, Electricity gets a period in the Energy column, while Skyscrapers does not in the Environ column.
I recommend removing all periods (except in the decimal numbers in the first Era column). Use " / " or semi-colon where you want to break apart words.
For plurals, on the TL 0 line, Crude Shelters, Personal Senses, and Messengers are plural, while Tribe and Clan are not (but should be).