rails/rails — comment on commit 0306f82e0c3cda3aad1b45eb0c3a359c254b62cc
File: railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt line 31
By yfeldblum:

That's fair. But it means that Ruby needs a TimeSpan class (e.g. for comparing elapsed times with thresholds).