6. excessive configurabilty leads to fragility at runtime - the overuse of annotations, xml/yaml/whatever configurations and late-binding (effectively assembling the app at runtime) eliminates quite a lot of advantages of a statically typed language and brings us back to string coding: runtime-errors due to typos, jpa strings in annotations, typo in an xml file leads to non-functioning software at runtime. Classloader horrors due to deeply nested library dependencies that use different versions of libraries, fueled by the insanity called maven.