# Key Points from IRC Log

• A discussion about predictive vision networks took place, with users sharing links to research papers including "Unsupervised Learning from Continuous Video in a Scalable Predictive Recurrent Network" (https://arxiv.org/abs/1607.06854) and a blog post explaining predictive vision concepts (http://blog.piekniewski.info/2016/11/04/predictive-vision-in-a-nutshell/).

• Users debated the nature of machine learning approaches, with one user suggesting that "a lot of machine learning looks a lot like cargo culting" and sharing a visual introduction to machine learning (http://www.r2d3.us/visual-intro-to-machine-learning-part-1/).

• There was a technical discussion about zeolite molecular sieves and their applications, including their use in oxygen concentrators through pressure swing adsorption and for separating water from ethanol, with users sharing educational resources on the topic.

• A conversation about supercritical CO2 properties explored phase diagrams, pressure requirements (1,071 psi), and potential applications in extraction systems, with users comparing CO2 to water phase behavior.

• Users discussed a consumer-grade water jet cutter, questioning how such technology could be made affordable when industrial pumps are typically very expensive, with one user sharing a Hacker News discussion about waterjet cutters.

• An interesting philosophical point was raised about climate change deniers and terraforming, suggesting that logically they should support "anti-terraforming machine development" if they truly believe humans cannot affect climate.