doc: provide more context on techinical values

In the discussion of nodejs#35323
it was suggested that we should add some
additional context/clarification to the technical
values documented for the project.

Signed-off-by: Michael Dawson <mdawson@devrus.com>

doc/guides/technical-values.md

@@ -3,6 +3,18 @@
 The project uses these technical values to establish priorities and guide
 collaboration.
 
+These values reflect the shared values of the
+collaborators as of this writing and will change
+and evolve. We hope they are useful to people new
+to the project in order to better understand which contributions
+will be aligned with the current direction and as thinking
+points when trading off between conflicting goals.
+
+The factors influencing every discussion/decision are
+different and priority 1 does not always trump priority 2
+and so on. Instead, they reflect priorities that we
+should factor into key discussion/decisions.
+
 ## Values and priority level
 
 * Priority 1 - Developer experience