&gt;Garbage collected doesn&#x27;t work for systems programming.<p>I wonder how Xerox PARC managed to write Interlisp-D, Mesa&#x2F;Cedar.<p>I wonder how Symbolics managed to write Lisp Machines OS.<p>I wonder how ETHZ managed to write Oberon, Oberon System 3,EthOS, AoS 2.<p>I wonder how Olivetti and Compaq managed to produce SPIN OS.<p>I wonder how Microsoft was able to produce Singularity and Midori OSes.<p>Actually I don&#x27;t need to wonder, plain technical achievements that fail to convice religion against GC systems.