True, you can download a deb or rpm from somewhere and it might install into /opt. However, /bin, /etc, /lib, /sbin, /usr, /var are all places where "package-ma

True, you can download a deb or rpm from somewhere and it might install into /opt. However, /bin, /etc, /lib, /sbin, /usr, /var are all places where "package-manager installed files" go.