whenever you want one. Make the consultant justify his recommendation
for a certain computer or a certain program; he owes you at least oral
explanation and perhaps a written one. How much experience has he
himself had with the product? Is he going by someone else’s word?
Whose? How certain is he that the software-hardware combo that worked
for the other person will work for you? Can he arrange a demonstration
of the combo so you can see for yourself how the software runs?