Weber would primarily be concerned with the question of objectivity and subjectivity,[6] going on to distinguish social action from social behavior, noting that social action must be understood through how individuals subjectively relate to one another.[6][26] Study of social action through interpretive means or verstehen ("to understand") must be based upon understanding the subjective meaning and purpose that individuals attach to their actions.[6][7] Social actions may have easily identifiable and objective means, but much more subjective ends and the understanding of those ends by a scientist is subject to yet another layer of subjective understanding (that of the scientist).[6] Weber noted that the importance of subjectivity in social sciences makes creation of fool-proof, universal laws much more difficult than in natural sciences and that the amount of objective knowledge that social sciences may achieve is precariously limited.[6]