Eventually, sampling error, deliberate or unavoidable, the killer problem with a THC tax on unprocessed marijuana, could fade as science and technology advance. Sampling could yield to full disclosure if science can reveal the precise chemical make-up of every gram we want to tax. That precision may seem far-fetched, but perhaps no more than X-rays, MRIs, and astronomical spectroscopy — figuring out what is in stars — might have seemed to our ancestors, not so long ago. One day, if a device can scan a flower and reveal all, THC taxation may seem unobjectionable.
THC taxation is unobjectionable now, or soon, for homogeneous concentrates.