On page 96 of the PDF version, the $ signs need to be escaped, in “an unconditional gift of $5 was twice as effective as a conditional offer of $50”). As it is now, the text between the $ signs is typeset in math mode.
(I post this here as I have no contact info for the PDF maintainer.)
On page 96 of the PDF version, the $ signs need to be escaped, in “an unconditional gift of $5 was twice as effective as a conditional offer of $50”). As it is now, the text between the $ signs is typeset in math mode.
(I post this here as I have no contact info for the PDF maintainer.)
Something cool on the PDF: the end of chapter 27. 503-504.