Interesting but also a very poignant example of a mechanicist way of thinking:

‘No money’, you act one way; ‘have money’, you act differently = ‘money must be the cause of the shift in your attitude’. Wrong.
Money act like a ‘truth serum’. Not enough money = you have to be careful, you cannot afford to step on too many toes. ‘Plentiful money’? Then you can act as callously as you want.
Alcohol does the same thing to people, hence ‘in vino veritas’.