Countering the popular "prototype-first" mantra, Abridge finds that in its complex, high-stakes environment, written documents (PRDs) are essential. They force strategic clarity on a product's defensibility and implementation complexity—questions a simple prototype cannot answer, preventing wasted cycles on "cool" but unviable ideas.

In an age of rapid AI prototyping, it's easy to jump to solutions without deeply understanding the problem. The act of writing a spec forces product managers to clarify their thinking and structure context. Writing is how PMs "refactor their thoughts" and avoid overfitting to a partially-baked solution.

When leaders demand high-fidelity prototypes too early, don't react defensively. Instead, frame your pushback around resource allocation and preventing waste. Use phrases like "I want to make sure I'm investing my energy appropriately" to align with leadership goals and steer the conversation back to core concepts.

Prevent endless cycles of analysis by defining decision-making boundaries upfront. Before work begins, the leadership team must agree on what specific data or inputs are necessary to make a call. This avoids the "fetch another rock" scenario where analysis is requested with no clear endpoint.

While AI makes prototyping easy, it's not always the right first step. A prototype can create a "primal mark" that biases the team towards a specific execution. For clarifying a vague problem space, a document may be better to avoid anchoring to a visual solution too early.

Accessible prototyping tools are changing product norms. The expectation is shifting from presenting detailed Product Requirements Documents to sharing interactive prototypes. This visual, hands-on approach accelerates discussions, improves decision quality, and makes ideas tangible for a wider audience.

Contrary to the 'prototype is the new PRD' trend, early prototypes can prematurely focus feedback on visual details. A written document is a more effective tool for getting buy-in on the core idea and strategy from stakeholders before investing in high-fidelity design.

Instead of getting bogged down in production constraints like failing tests, designers are encouraged to use code to render the most desirable version of an idea. The prototype's value is in communicating the full vision to engineering, not in being a mergeable pull request.

In design thinking, early prototypes aren't for validating a near-finished product. They are rough, low-cost "artifacts" (like bedsheets for walls) designed to help stakeholders vividly pre-experience a new reality. This generates more accurate feedback and invites interaction before significant investment.