ERRATA and Clarifications
Exploratory Programming for the Arts and Humanities
Nick Montfort
MIT Press, 2016
http://mitpress.mit.edu/exploratory

This sheet updated February 2, 2018.

Thanks to Angela Chang, Michael Greenberg, Christopher Vickery, Jim Brown,
and Adam Ladziński.

FIRST EDITION, FIRST PRINTING:

p. 63
    I changed the name of a function in several places, but left the
    old name in one case.

TO CORRECT:
ON p. 63
Change "scope_example(" to "scoped("
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TO CORRECT:
ON p. 89
Change "make use their methods," to "make use of their methods,"
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TO CORRECT:
ON p. 98
Change "10,003" to "1000" with a superscripted "3" after it.
(That is, one thousand to the third power.)
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TO CORRECT:
ON p. 107
Change "In chapter 7, the discussion" to
"In chapter 10, the discussion"
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p. 112
    The variable wyatt, at the top, is assigned a different value (a
    longer string) than it was in earlier drafts of the book.
    Instead of being 43 characters long, this string is 86
    characters long. So, several of the numbers on the next two
    pages, which were not changed when the string was involved, are
    wrong. Several corrections will be made in the next edition,
    although I hope learners will be able to figure out that a
    different length is meant even if they don't see this correction.

TO CORRECT:
ON p. 113
Change "it reaches 42" to "it reaches 85"
Change "43 characters long" to "86 characters long"
Change "the 43 characters" to "the 86 characters"
Change "offset 42" to "offset 85"

ON p. 114
Change "up to 42" to "up to 85"
Change "number 42" to "number 85"
Change "character 42" to "character 85"
Change "character 43 of the example" to "character 86 of the example"
Change "there is no character 43" to "there is no character 86"
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TO CORRECT:
ON p. 136
Change "stright" to "straight"
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p. 138
    Learners (and instructors) may have different sorts of line
    endings depending upon the operating system used and the method
    of downloading text files from Project Gutenberg (and other
    places). So, a regular expression with \r\n\r\n (as shown in the
    book) may not work for some, while substituting \n\n in the
    expression may work.

    However, anyone who downloads a text file directly from Project
    Gutenberg by, for instance, right-clicking a link and choosing
    "Save link as..." you should get exactly the same file that I
    did, and my instructions, even those dealing with line endings,
    should be applicable.
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p. 139
    The count of vowels mentioned is literally true but unhelpful.

TO CORRECT:
ON p. 139
Change "more than twenty thousand of them" to
"more than two hundred thousand of them"

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p. 164
    It's potentially confusing that the code at the bottom assumes a
    transparent image; the variable a needs to have a value for this
    code to work. It’s easier to just give this example for images
    without transparency only.

TO CORRECT:
ON p. 164
Change "to all of this:" to
"to all of this--this version is only for images without transparency:"
In making the change above, typeset "--" as an en dash.
In the third-to-last and last lines, both code, remove ", a" at the end.

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p. 179

TO CORRECT:
ON p. 179
Change "If one of them is 20, 205." to
"If one of them is 20, 235."

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p. 202

TO CORRECT:
ON p. 202
Change "it's still worth nothing that" to
"it's still worth noting that"

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p. 207
    On the second-to-last line, the "halfway point" is mentioned
    incorrectly; it is correct in the code at the beginning of the
    paragraph.

TO CORRECT:
ON p. 207
Change "len(w)/w" to
"len(w)/2"

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p. 208
    Third line from the bottom has a phrase repeated by mistake.

TO CORRECT:
ON p. 208
Change "of such of such a list" to
"of such a list"

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p. 224 [A an entry in an earlier version of the errata sheet said to
        make a change here to discuss a vertical line rather than a
        horizontal line. That correction was itself a mistake -- no
        changes here.]
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p. 230

TO CORRECT:
ON p. 230
Change "Write variance(), a function that accepts a list or array of
numbers and returns the mode." to
"Write variance(), a function that accepts a list or array of
numbers and returns the variance."

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p. 234

TO CORRECT:
ON p. 234
Change "that I would if the data were arranged randomly."
"than I would if the data were arranged randomly."

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p. 254

TO CORRECT:
ON p. 254
Change "As I final" to
"As a final"

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p. 273

TO CORRECT:
On p. 273
Change "Scholars in the humanities of have already" to
"Scholars in the humanities have already"

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p. 289

TO CORRECT:
Change "Alice, Nathan." to
"Altice, Nathan."

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p. 290

ADD IN REFERENCE LIST WITH *ITALICS* INDICATED:
Liao, Yuen-Kuang Cliff, and George W. Bright. "Effects of computer programming on cognitive outcomes: A meta-analysis." *Journal of Educational Computing Research* 7 (3): 251-268, 1991.

Salomon, Gavriel, David N. Perkins, and Tamar Globerson. "Partners in cognition: Extending human intelligence with intelligent technologies." *Educational Researcher* 20 (3): 2-9, 1991.

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