Good presentation with a great, artistic style. Also liked her articles about speeding Java up and &quot;A&#x2F;A testing.&quot;<p>Far as this one, the only correction I have is regarding the slide that says you can&#x27;t write an OS in Java. Several have been written w&#x2F; JNode and JX OS coming to mind immediately. JX is my favorite given its interesting architecture is mostly compatible with high assurance requirements. Just needs a high assurance implementation. A re-write of such an architecture in Rust might be interesting. Or SPIN OS as it was done in Modula-3 before.