Basically there are two kinds of sales: high value/reasoned/important/logical sales, and impulse/low value/time limited/etc. sales.<p>You address fundamental objections when dealing with a "real" client, and any attempts at deflection or subterfuge will be net-harmful. The only "trick" is knowing about internal champions and the customer's multi-person purchasing process (when the user isn't the buyer and/or doesn't have ultimate purchase authority in a single person).<p>For random impulse shit, you can trick people. Used car dealers define the upper bound of bullshit for deal size. Generally few substantial purchasing decisions by educated (i.e. business or professional) buyers happen like that, but if you're selling a product on late night tv, you can minimize and bypass objections through trickery, "sell the sizzle", etc.<p>Neil Rackham's SPIN Selling and Major Account Sales Strategy are the best books I've ever found on sales.