Table 2. log-Evidence () ratios, for the collective state versus the finite-state case, for the ten most-edited pages on Wikipedia.

sig.	page name	historylength		collectivestate index
			CS vs. nEXP	α
<10−8	George_W._Bush	45,220	18.5	0.576±0.005
<10−6	Islam	18,054	14.9	0.592±0.007
<10−5	United_States	31,919	12.3	0.545±0.006
	Global_warming	19,541	12.1	0.602±0.008
<10−4	Wikipedia	31,927	11.3	0.638±0.006
	Michael_Jackson	26,977	10.4	0.572±0.007
<10−3	2006_Lebanon_War	19,656	9.1	0.49±0.01
	Deaths_in_2009	20,902	7.7	0.42±0.01
>104	Deaths_in_2007	18,215	−11.5	–
>107	Deaths_in_2008	19,072	−17.5	–

In cases where the collective state model is strongly favored (large, positive ), we show the best-fit value of the parameter (see Eq. 6). Eight pages show strong (-value ) evidence for the collective state (CS) model of Eq. 6 over and above that for the sum of exponentials (nEXP). The strongest evidence in favor of finite-state computation is found for two of the three “death list” pages, which collate otherwise unrelated information from other parts of the encyclopedia. Appendix S4 in the File S1 gives details on the use and computation of for model selection.