
@brunet_dr @KramerGrzegorz Obawiam się, że jest jeszcze gorzej: ludzie nie zawsze myślą (delikatnie mówiąc). Exemplum - ci z petardami.
Polski
Marcin Benke
601 posts






Every dollar invested in cycling returns 20 or 30 in social economic benefits: reduced carbon, air and noise pollution, improved public health and less congestion. Cycling brings benefits to everyone in a city, whether or not they get on a bike. dutchcycling.nl/knowledge/down…









Thinking about Marx's attempt to disprove the concept of derivatives.





