Fellow educator Knud Dittmann adds: “Once children have the consumer mentality ingrained in them, they accept low grades or even having to repeat a year as the price to pay. ”
فيُقدّر عدد الشمپانزي حاليا بـ‍⁠٠٠٠‏,٢٠٠ قرد بعد ان كان ٠٠٠‏,٠٠٠‏,٢ منذ قرن .‏