What you say is true, but even after taking into account the point about absence of evidence being evidence of absence one still needs to Bayesian adjust on account of measurement errors giving rise to some charities’ activities being overvalued and others being undervalued according to the measurements.
What you say is true, but even after taking into account the point about absence of evidence being evidence of absence one still needs to Bayesian adjust on account of measurement errors giving rise to some charities’ activities being overvalued and others being undervalued according to the measurements.