Figure S16 A 100% J oe 75% 3 8% ba z 50% Ss o x2 sft 25% —_ invented in 1800-1850 — invented in 1850-1900 O% 0 25 50 75 100 B Years since invention 6 18 2 2 |p 1800-1840 (nae 16 1840-1880 (33) [iy 1880-1920 (nm55) 2 J 14 20 Be ; 2 : 5 5 to D2 6 e 1 4 5 2 2 71800 1850 1900 1950 2000 fend 1850 1900 1950 2000 fe00 1850 1900 1950 2000 Year of peak Fig. $16. Controls. (A) We observe over the same timespan (100 years) two cohorts invented at different times. Again, the more recent cohort reaches 25% of its peak faster. (B) We verify that inventions have already reached their peak. We calculate the peak of each invention, and plot the distribution of these peaks as a function of year, grouping them along the same cohorts as used in the text. In each case, the distribution falls within the bounds of the period observed (1800-2000). HOUSE_OVERSIGHT_017055