&gt;Just giving up on money laundering isn&#x27;t something most people are willing to think about, particular for an experimental payment system that they don&#x27;t care about and probably won&#x27;t use.<p>But nobody is actually advocating this, least of all me.  The argument is that tracking every financial transaction is no longer viable, whether we like it or not.<p>Moreover, digging your heels into the sand and saying &quot;but it&#x27;s not right to give up on money-laundering&quot; doesn&#x27;t change the reality:  there exists technology that makes arbitrary, anonymous payments trivial to perform.  What do you propose we do?