The article is focusing on ventilation and air circulation. Poor ventilation results in increased CO2 levels, and it does so in a predicatable, measurable amou

The article is focusing on ventilation and air circulation. Poor ventilation results in increased CO2 levels, and it does so in a predicatable, measurable amount. We also know that poor ventilation increases the likelihood of catching covid from an infected individual. So measuring the level of a space's ventilation is not meaningless data, even if it doesn't translate 1-to-1 with transmission rates.