The student is right about identifying a specific strain like knowing if it's northern lights or whatever but there are ways to narrow it down........rub the leaves and stems to check out the smell-- hashy, minty, skunky, citrusy etc..........look for any kind of trait like twisted leaf growth inherent in blueberry or oregon purple thai.........record internode length hell every little nuance of the little bugger because if it turns out to be a killer plant, someday you might buy a strain that is very close to the same specs...blah blah and it's possible--very slim--that it is the same strain