Yes, but now you're not comparing maven vs. Bundler, you're comparing statically vs. dynamically typed languages. It's almost impossible to get the strong guara

Yes, but now you're not comparing maven vs. Bundler, you're comparing statically vs. dynamically typed languages. It's almost impossible to get the strong guarantees you get in a statically typed language in a dynamically typed one. If that's the discussion you want to have, well, I personally also prefer statically typed languages, but that's beyond the point. That said, I've had issues, e.g. on CI, that didn't manifest locally because of a mismatch in Java versions (something with JAXB, IIRC), and Java is maybe sometimes a bit too cavalier about the issue.