> "Java developers - want to learn Node and React?" Could be a great incentive, but not to me personally. I'm very invested in the JVM, and I'd rather have tha

> "Java developers - want to learn Node and React?" Could be a great incentive, but not to me personally. I'm very invested in the JVM, and I'd rather have that investment used. Something like the following would make me jump ship instantly: "Java developers - want to use Flink/Spark, some Scala/Clojure? How about 'very fast decision trees' learned online out of a Kafka bus?"