Strategy question

Mark wants to know if Facebook should invest in building products related to sports and activity tracking. Why and what should Facebook build?

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What this question tests

Strategic reasoning: evaluating whether a company should enter an adjacent category and proposing a concrete product.

State the interpretation: focus on Facebook's core app rather than a separate fitness brand.
Assess why Facebook: its social graph and event/group tools give it a natural edge for motivation-driven activity tracking.
Identify user need: people stick with fitness goals better with social accountability, which existing trackers lack.
Propose a concrete feature: friend leaderboards or group challenges tied to existing Facebook Groups and Events.
Define success as weekly active challenge participants or activity posts shared.

Grounds the 'why' in Facebook's actual advantage (social graph, groups) rather than a generic fitness pitch.
Proposes a specific feature, like a step-challenge leaderboard integrated with existing Groups, not a full wearable.
Acknowledges the competitive risk from Strava and Apple Fitness, and how Facebook differentiates via social accountability.
Uses an assumed metric, e.g. 15 percent of challenge participants inviting a friend.

Proposing Facebook build a fitness tracker hardware device with no clear rationale.
Ignoring strong existing competitors like Strava and Apple Health.
Not tying the idea back to Facebook's unique social graph advantage.

Why would users choose this over Strava or Apple Fitness?
How would you measure whether social accountability actually improves retention?
What's the biggest risk in launching this?