The humanities use methods that are primarily critical , or speculative , and have a significant historical element-as distinguished from the mainly empirical approaches of the natural sciences .
The humanities study the human condition and mostly use methods that are analytic , critical , or speculative and not as empirical as natural and social sciences .
Egypt , with support from China and United States , recommended that a ban on hashish be added to the Convention , and a sub-committee proposed the following text : The use of Indian hemp and the preparations derived therefrom may only be authorized for medical and scientific purposes .