First, let's get something straight: that indica vs. sativa debate is largely a myth nowadays. The three types of cannabis are Sativa, Indica, and Ruderalis; but years of breeding and co-evolution have blurred the lines between each type. Thus, no cannabis plant exists with pure "indica" or "sativa" genetics.
First, we must clean up our terminology. The word strain is borrowed from microbiology and is used to describe a genetic variant or subtype of a bacteria, fungus, or virus. Instead of strain, a better term to use for plants is cultivar, which refers to cultivated plants.
Instead of relying on the terms "indica" and "sativa" to categorize our cannabis, we can make more informed classifications & recommendations by using a combination of a cultivar’s cannabinoid profile, terpene profile, and anecdotal evidence.
We classify cultivars based on their anticipated effects in the following categories: