def log_then_get(url, context)
      puts "Requesting #{url}..."
      get(url, context)
    end
 
    def get(uri, context)
      response = Net::HTTP.get(uri)
      puts caller(0).join("\n")
      response
    end
 
    def get_http_thread(url)
      Thread.new do
        log_then_get(URI(url), Thread.current)
      end
    end

Good example of the downsides of dynamic typing:

1) get_http_thread takes a url (String) and converts it to a URI object

2) log_then_get defines its parameter as `url`, but really its expecting a URI object

3) get defines its parameter as `uri`, but we're passing it an argument called `url` from within log_then_get.

Lots of traps readily awaiting an unsuspecting programmer or newcomer to a project that contains code like this.