Hi Mr Realist.
You are of course welcome to hold your opinions. Neither of us were there on the day so what both of us hold is just that, an opinion.
The reasons that I think allow sufficient doubt for such a conviction and sentence are as follows.
Frequent police blockades of interstate roads (including the back roads) using highly sensitive sniffer dogs. Known involvement of airport baggage handlers to make interstate shipments. Arrest of Qantas baggage handler for cocaine importation on same day as Schappelles flight.
Baggage handlers never checked on leaving airport at end of shift thus providing ample opportunity. Instances reported previously of drugs found in travellers bags in Bali and reported to Australian consulate (0n official record). No evidence of Scappelle being a grower, therefore who would give $40,000 worth on consignment. Schapelle has offered blood samples to show zero use of cannabis. When "busted" at airport how is she supposed to react, what facial expression would be acceptable to the cynics? Surprise? Fear? Shock, Disbelief. How do you define a look of "guilty as hell".
In summary ....plenty of reason for reasonable doubt.