Just like those nifty tokens everyone's been so stoked about that certify a digital asset to be unique and therefore not interchangeable. For fear of sounding, well, sentimental, we can't ever get this exact bushel of hops in again. This grain was grown in a specific region that experienced unique weather during the growing season. You get the idea. It may be next to imperceptible on a shorter timeline, but this beer will never be the same as it is at this very moment. This is a fleeting expression of impermanent joy in the form of beer in a can. F*ck%*# science, amirite?