...Important changes may occur in your Learning Plan once you embark
on your studies -- and the fact that a project does not work out does
not necessarily mean failure on your part. You must "go with the flow"
and learn to salvage valuable learning from unplanned eventualities.
As long as any changes in the Learning Plan are discussed with your
advisor and are made in a timely way, they should be viewed as part of
the learning process.
Change is part of life and part of learning. Don't excuse yourself from creating a Learning Plan because you're not sure how definite your project is. If your plan or your project changes, that is part of your learning cycle, and you should be able to document it. The Learning Plan is not written in stone. It is normal to have a few adjustments in plan or false starts while your work is progressing (although your advisor obviously needs to be involved in these adjustments). Get it out of the way early on, and you will thank yourself.