I have no dog in this fight. That is, I&#x27;m neither financially nor emotionally invested in Docker or any sort of container technology, nor their Solaris OS thing, nor CoreOS, nor any unikernel. I read this blog not knowing who he is and very little about Joyent so I held no previous malcontent against the man (edit: nor do I now, in case that clause implied otherwise). That being said - you weren&#x27;t even remotely harsh.<p>He made a bunch of wild claims without backing it up even with simple links to buqtraq&#x2F;securityfocus&#x2F;whatever providing evidence that hypervisors are inherently additive to your &#x27;surface area&#x27; by which you can be attacked. He also, as you mentioned, failed to provide even cursory benchmarks, much less cite any 3rd party, academic, peer reviewed analyses. Thirdly, he asserted a false choice between unikernels and on-the-metal. There&#x27;s nothing stopping you from firing up a heterogeneous environment, using unikernels when they perform well, and containers when the situation dictates them. So yeah, you weren&#x27;t too harsh - IMO, your post was more well-balanced and thought out than his entire blog post. But hey, who knows, maybe he intentionally wanted to be incendiary so we&#x27;d all be talking about his company&#x27;s product (in some capacity at least) on a slow Friday afternoon.