The math
Horizon row: 8 shots at 45° spacing with a 46° view means only about 1° of overlap. Every seam is a near-gap, and any aiming wobble becomes an actual hole.
Up/down rows at ±40°: each shot covers roughly 60° there, but they’re 90° apart, so there are guaranteed gaps.
User Researchers don’t need a full evals setup at the start of a project. 20 to 30 real real proof of concept is a good start. The goal is to check whether your definition of “good” matches what users actually care about. Build the harness once you trust the criteria.
