Bitcoin users were surprised last week by the bug CVE-2018β17144 which made the network vulnerable to a Denial of Service attack and possible inflation via a form of double spending. The potential severity of this bug and Bitcoin Coreβs rapid efforts to patch it have drawn criticism from developers building competing blockchains. Bitcoin educator and developer Jimmy Song explains the details of the bug, the patch, and why the economic game theory built into Bitcoin kept the bug from being too severe.