Corporate mantra "DO NOT ASSUME"... Possible???

Corporate mantra "DO NOT ASSUME"... Possible???DO NOT ASSUME : Getting taught in almost all corporate basic training ... Is it really practical in real day to day life to do anything without assumption???Have we ever asked flight pilot or taxi driver for his licence, log book, driving hours...??? We assumed that everything is okay.Have we ever checked correctness of doctor's degree...??? We assumed that everything is okay.Have we ever checked genuine quality of our food...??? We assumed that everything is okay.Just look around and you will have many questions. Above examples are very few from our life... Life will come to the still stand if we do not assume as everything is fine and inline with our expectations...Without assumptions of getting business you can not even visit the customer... Forecasting the future business scenario of which, customer himself might not be aware... We have to start with the biggest ever assumption (Prediction, forecast) that we will be alive in the next moment...We have to make POSITIVE ASSUMPTION and move ahead...!!!