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Breaking The Echo Chamber

Breaking The Echo Chamber

Von: Manuel da Costa
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Breaking the Echo Chamber is a podcast series that exposes the uncomfortable truths about why most experimentation programs fail to drive real business impact. Host Manuel Da Costa, founder of Efestra, challenges industry orthodoxies and tackles the systemic issues that trap teams in endless testing cycles without meaningful results.


Each episode reveals how common practices like tool proliferation, process obsession, and tactical thinking create a dangerous disconnect between test results and strategic decisions. If you're tired of running experiments that executives don't trust or implementing tests that never see the light of day, this series cuts through the industry noise to show you what's really broken and how to fix it.


Perfect for experimentation practitioners, product leaders, and executives who suspect their testing programs are generating more activity than actual business value.

Copyright 2025 Manuel da Costa
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  • EP 3 - The Conversation Gap Between Technical Experts & Business Leaders
    Sep 14 2025

    Experimentation specialists routinely lose credibility with leadership by focusing on technical details rather than business impact. The episode explores why this communication breakdown happens so frequently and offers practical solutions. Instead of leading with methodology and statistics, successful experimentation leaders present insights first, connect findings directly to business priorities, and create conversations around implications rather than one-way technical presentations.

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    54 Min.
  • EP 2 - Rejecting the culture of experimentation with Mark Palfreeman
    Jul 21 2025

    Mark Palfreeman, Senior Business Intelligence Manager at Flutter UK and co-founder of Experimentation North, joins Efestra's Manuel da Costa to challenge the industry's obsession with "culture of experimentation." Mark argues for rejecting velocity-focused testing in favor of a "culture of learning," exposing how testing tools have become "guns in the Wild West" that prioritize running more experiments over generating actionable insights. Through candid discussion about challenges, trust gaps between experiment results and business reality, and the dangerous democratization of testing without proper governance, this conversation reveals why most "mature" experimentation programs are busy but not valuable - and what organizations should focus on instead.

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    46 Min.
  • EP 1 - Experimentation Needs Rebooting with Jonny Longden
    Jul 11 2025

    In this thought-provoking episode, Jonny Longden shares insights from his 20-year journey in experimentation, explaining why the vast majority of what gets called "experimentation" doesn't make sense and how the industry got trapped in tactical thinking rather than strategic value creation.

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    48 Min.
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