english: And an amazing fact for techno-optimists is that in the first half of the 20th century, the rate of improvement of life expectancy was three times faster than it was in the second half of the 19th century.
non_english: Jedna zapanjujuća činjenica, za one koji su optimistični prema tehnologiji, je činjenica da je u prvoj polovini 20. veka stopa životnog veka rasla tri puta brže nego u drugoj polovini 19. veka.