Actually trying all promising new technologies is another full time job, or at least take 20 hours a week. Most developers just don't want to be left behind, s

Actually trying all promising new technologies is another full time job, or at least take 20 hours a week. Most developers just don't want to be left behind, so they pick up whatever is trendy at the moment. It's completely rational, because knowing what is trendy getting you hired. However, implementing what's trendy, without carefully weighing pros and cons*, is what's dangerous.