Silicon Valley has no shortage of out-there ideas ostensibly meant to change the world. The latest? A straight up Black Mirror-esque proposal to chemically freeze human brains in an effort to “preserve neurons and synapses” and, theoretically, digitally upload memories. Y Combinator venture Nectome is offering to “embalm” your brain for $10,000 to keep it crisp and, well, freshly brain-y. There is one catch, though: The process will kill you, as the company states upfront (it’s “100% fatal,” according to the founders).