Five problems.
Five AI product systems you can inspect.

These cases are written so a founder, recruiter, engineer, operator—or someone with no product-management vocabulary—can follow what the problem is, how Rika reasons through it, where similar problems differ, how the system works, what fails, what evidence is real versus simulated, and what the user actually experiences end to end. The goal is not “five polished concepts.” The goal is to make my product judgment transferable to a client's next messy problem.