A little while ago I embarked on an 
Interrail journey from the UK, via Eurostar and Paris, to Zurich, Vaduz, Munich and Frankfurt before returning home via Brussels.  I could have done the journey more swiftly by air or even a combination of air and rail but then I would not have enjoyed the scenery, the quiet hours in a carriage, the stressless voyage and even the sense of adventure.
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| FROM VADUZ TO MUNICH VIA ST GALEN | 
Yes, I had a destination to reach, but the journey was the real objective.
Using case studies in business classes is just like that - the destination or conclusion can be reached in a number of different ways - but which will be the most valuable for the key learning objectives?  Which will be most accessible for the class?  Which will be the most enjoyable and memorable?
Could I have lost my way and been stranded at an intermediate station? - of course - but my trust in the Interrail App, my basic language abilities and the helpfulness of railway staff and other passengers meant that I had knowledgeable guides to ensure that any slight misdirection or unexpected stoppage was not fatal to the achievement of my goal.
In a classroom, the tutor can be the guide, or the guest lecturer from industry (
Blog passim), or the students' ability to research and seek out alternative routes.
When I planned a subsequent trip across Australia (Melbourne, Sydney and Armidale) I used the principles of  my European trip and hired a car, rather than fly.
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| I'D HAVE MISSED THE GIANT MERINO IF I HAD FLOWN! | 
It should warm the cockles of the Chief Accountant's heart (if he had one) to know that my trips were also the cheapest option.