Actually, two of the “five biases” were objective, in that they didn’t rely on feelings or sensibilities. People can objectively say they were (a) suggested to work fewer hours, and (b) mistaken for custodial staff.
The problem, even with those two, is that the “why” remains unanswered. Did they suggest you work less because they didn’t think you could handle it (bad) or out of sincere care for your or your famiies well-being (not bad). Maybe the person who was asked was a sixty hour workaholic, and they were just suggesting they cut back to 50. Maybe the same suggestion had been made to the man whose wife had just given birth. Who knows?
Same problems with the other question. Did you happen to have a broom in your hand when they asked you? :-)
The assumption is that a positive response is indicative of bias. That’s……..not nearly enough to draw a conclusion from.