Exercise 3: Explore Mode for an Unanticipated Question — Possible Solution
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Explanation:

Grafana's Explore mode is built for exactly this situation -- it lets
an engineer run an ad-hoc PromQL query directly against a data source,
on the spot, without first needing to build and save a panel for it.
During an incident where the actual question that needs answering
wasn't anticipated by anyone who built the existing dashboards, Explore
mode is the tool that lets the engineer follow that new question
immediately, using the same underlying Prometheus data every existing
dashboard already draws from, just without being limited to a
pre-built panel.

-- Why a fixed dashboard alone wouldn't have been enough --
--
-- This is a direct, concrete instance of obs1-1's own
monitoring-vs-observability distinction. Every panel on a fixed
dashboard represents a question someone thought to ask IN ADVANCE --
that's real, useful monitoring, but it can only ever answer the
specific set of questions it was built to answer. The moment an
incident raises a genuinely new question -- one none of the existing
panels happen to cover -- a fixed dashboard has nothing more to offer;
the engineer would be stuck either waiting for someone to build a new
panel first, or giving up on that specific line of investigation.
Explore mode is Grafana's own practical answer to obs1-1's own
requirement that real observability support answering an unanticipated
question using the underlying data directly, not just whichever charts
happened to already exist.

WHY THIS WORKS AS AN ANSWER
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This identifies Explore mode as the correct feature and explains what
it actually does (ad-hoc queries with no pre-built panel required),
then explicitly reconnects the scenario to obs1-1's own
monitoring-vs-observability distinction rather than treating the two
chapters as unrelated.