Bias.

Abstract

During his epic voyage on the Beagle in 1831, Charles Darwin visited a ranch in the neighbourhood of Rio de Janeiro.I Brazil at that time was a slave state and it happened that the owner of the ranch was in financial difficulty. To resolve his problems he proposed to sell some of his slaves. This would permanently separate husbands from their wives and children. The rancher was generally thought to be a kindly and good man. Darwin concluded that the vested interest of his economic situation caused the rancher to be unaware of the enormity of his intended crime. Darwin wrote "I do not believe the inhumanity of separating thirty families, who had lived together for many