1. The network of actors, its number of nodes, and the values for S and C are from .
2. The number of neurons is from [40, p.480]. S and C are from .
3. The number of words is from the OED.
4. The values for S and C are from  based on about 3/4 of the million words appearing in the British National Corpus. The British National Corpus consists of about 70 million words of written English, used to obtain statistical information about the use of the English lexicon.  found S=3.16 and C=.53 based on an online English thesaurus of about 30,000 words. 's sample size is larger and likely more representative of actual usage of English words.
5. The number of words is based on the University of Toronto's Old English Dictionary project.
6. The number of words is from EMEDD .
7. The values for S and C are based on the actors study of .
8. The number of people is an estimate of the English speaking societies in 1989, determined by adding the number of people determined for censuses for the USA, 248.7 million people, according to the US census 1990 ; Canada 27,296,859 people in 1991 ; England 50,748,000 people in 1991 ; Australia, 16,850,540 people in 1991 [68, p. 11]. These total 343,595,000 people.
9. The number of people in England is based on Hinde's remark (at p. 28) in his book on England's population that 1.6 to 1.7 million people at the time of the Domesday Book, 1086, are the estimates that are most likely to be accurate, and his estimate (at p. 24) of English population growth of 0.5% per year for the period 1086 to 1348 . On the Domesday population, similar estimates are found in [51, p. 149], [26, p. 53], and [54, p. 34].
10. The number of people in England is from [61, Table 7.8, following p. 207, for the year 1656].
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 Feynman, R., Leighton, R.B. & Sands, M. The Feynman Lectures on Physics Addison-Wesley, 1963