We highlight a trade-off between speed (the rate at which behaviours propagate in the population) and resilience (the measure of initial adopters required for spreading) in models of threshold contagion: contagion is faster in networks where it is harder to initiate contagion. We derive various...

We measure technological progress in oceanic shipping by using a large database of daily log entries from ships of the British and Dutch navies and East India Companies to estimate daily sailing speed in different wind conditions from 1750 to 1850. Against the consensus, dating back to North...

We measure technological progress in oceanic shipping directly by using a large database of daily log entries from ships of the British and Dutch East India Companies and Navies to estimate daily sailing speed in different wind conditions from 1750 to 1850. Against the consensus among economic...

We study the impact on road safety of one-day massive speed limit monitoring operations (SLMO) accompanied by media campaigns that announce the SLMO and provide information on the dangers of speeding. Using register data on the universe of police reported accidents in a generalized...

We study the impact on road safety of one-day massive speed limit monitoring operations (SLMO) accompanied by media campaigns that announce the SLMO and provide information on the dangers of speeding. Using register data on the universe of police reported accidents in a generalized...