Did you actually read the examples I gave in my post before last?

To summarise:

• If you have an app that has worker threads that don't need Tk, and a main thread that does.

  use any moduels required by the workers; spawn the workers; then require Tk in the main thread.

• Alternatively, it can make sense to spawn a (single) thread that then requires the 'big module' that only it needs; and then require the modules needed by the worker threads before spawning them.

  See the DBI example.

All of this seems pretty clear from my post before last. To arrive at your interpretation on my intent seems hard.