(Metaphor: groups of explorers seeking a fabled place)
Agile and Lean are indeed different.
They are two different paths taken by different groups in an effort to arrive at the same place.
We do not yet know what that place is, nor what it will look like when we’re there.
However, both groups are getting closer to that place.
Both groups are therefore following nearly the same path at this point.
Thus, they are adopting the same practices and approaches.
And, they are near enough that some people spend time with both groups.
The group that stops innovating will “make camp” and die off over time.
If the two groups fully merge, a portion of the combined group will go their own way and make a new path (“post-agile”?)
Nobody in either group argues that the journey isn’t worth taking, only that the paths are different.
The “journey map” for each group starts at Port Waterfall, but they went very different ways to get to where they are today.
Each group has highly intelligent and intuitive leaders.
Each group values different things in their members.