# File lib/merb-slices/module.rb, line 320
      def self.start(interval = nil)
        self.lookup ||= Set.new(Merb::Slices.slice_files_from_search_path)
        @thread = self.every(interval || Merb::Plugins.config[:merb_slices][:autoload_interval] || 1.0) do
          current_files = Set.new(Merb::Slices.slice_files_from_search_path)
          (current_files - self.lookup).each { |f| Merb::Slices.activate_by_file(f) }
          (self.lookup - current_files).each { |f| Merb::Slices.deactivate_by_file(f) }
          self.lookup = current_files
        end
      end