 Profeseri Steve Lindsay wigisha kuri Kaminuza ya Durham mu Bwongereza wayoboye itsinda ryabakoze ubu bushakashatsi, yavuze ko yishimiye cyane ibimaze kuva muri ubu bushakashatsi kugeza ubu, ariko avuga ko imbwa zitaramenyera gukoreshwa byakamenyero. 