In hardware automation, a "go slow to go fast" approach is essential. Iterations are too slow and costly once hardware is built. Front-loading validation through drawings and simulations avoids major architectural issues that often get buried later due to project momentum or "go fever."

Unlike software, a deep-tech hardware startup's first product is essentially a prototype, according to Cerebras CEO Andrew Feldman. The second iteration refines the technology, and only the third generation truly scales and achieves market traction. This necessitates a decade-plus timeline and immense capital before success.

Software companies struggle to build their own chips because their agile, sprint-based culture clashes with hardware development's demands. Chip design requires a "measure twice, cut once" mentality, as mistakes cost months and millions. This cultural mismatch is a primary reason for failure, even with immense resources.

Unlike software, hardware iteration is slow and costly. A better approach is to resist building immediately and instead spend the majority of time on deep problem discovery. This allows you to "one-shot" a much better first version, minimizing wasted cycles on flawed prototypes.

For ambitious 'moonshot' projects, the vast majority of time and effort (90%) is spent on learning, exploration, and discovering the right thing to build. The actual construction is a small fraction (10%) of the total work. This reframes failure as a critical and expected part of the learning process.

In aerospace and defense, the classic Silicon Valley motto is dangerous. Hardware failures can lead to physical harm and mission failure, unlike software bugs. This necessitates a rigorous testing and evaluation stack to prevent edge cases before deployment, making speed secondary to safety and reliability.

Unlike pure software, building software for a physical product imposes immovable deadlines dictated by hardware manufacturing and shipping lead times. This forces software teams to abandon flexible, continuous iteration in favor of a highly-focused, delivery-oriented mindset to ensure the software is ready when the hardware is.

Unlike software's daily compilations, hardware development allows only a few "compiles" (builds) in total. This necessitates a more conservative, upfront process focused on reliability and planning, as you can't ship over-the-air updates to fix physical products.

When launching a new hardware product, success hinges on four principles: 1) Define goals early and change them as little as possible. 2) Start design on the hardest, most likely to fail parts. 3) Over-index iteration on parts customers touch most. 4) Act with ruthless urgency.