Full article coming soon. In the meantime, here's the short version:
At Learning Online Group we ran more than 50 salespeople on the phones every day. Sampling a few percent of that volume meant our compliance function was making decisions on almost no data. Every time we asked "have we ever heard this claim on a call?" the honest answer was "we don't know, we probably didn't listen to it."
That was the moment sampling stopped being a compliance strategy and started being a compliance risk.