//------------------------------//
// The Answer 25 
// Story: Life is A Test 2: Test Harder (Quite A Bit Harder) 
// by Brony_of_Brody 
//------------------------------//

The solution involves three steps.




First, the supplier fits the package with a padlock and sends it to Fluttershy.

When Fluttershy gets it, she now does something counter-intuitive: she secures the package with ANOTHER padlock of her own. This sounds crazy, but that's where the genius step 3 comes in.

Fluttershy then sends it back, where the supplier can now remove their own padlock, then send it back once again. After that, all Fluttershy needs to do is remove her own padlock, and she can open it up and get Graham's medicine!



You might wonder how Fluttershy would even know to do this, however. Well, simply put, the supplier can tell her whatever he likes, because even if the PIB knows about the plan, without knowing the combinations to the padlocks, they can't do a thing about it. Bad one PIB.