p1: A researcher states that dinosaur is endotherms or ectotherms. This researcher says the dinosaur is Endotherms(热血) due to the high density of the Haversian bones found in a fossil analysis. The high bone density suggests the dinosaur has a high level of metabolism and thus endotherms.
P2: Second researcher did another experiment, found that when increased activity in both endotherms and ectotherms, the density of havarisian bones in both specifies increased. Thus, dinosaur may not be endotherms based on the logic of the first researcher. first researcher failed to consider other factors may affect the bone density in Endotherms/ecotherms.
