In the spirit of philosophy I will take up this debate; and also because I have respect for the question itself. Now let us turn to the question itself "is man only a thinking machine?" A Hobbesian and pessimistic philosopher would say "yes" while an idealist would say "no"; but that would be because both have attributed their own emotions to the equation. If we look at the question in pure terms, we must ask "what is a machine?" Is a machine so easily definable? Will futuristic machines be able to love or be engineered to feel? If so...then that would mean that machine and man would be very similar. If we put the concept of an immortal soul on the side, we can find little issue with comparing a very futuristic-type of robot with a sexually produced being. If they could, can both love, feel, taste, hear, see, think, touch, and dream; that would put them on the same level as man/woman. If machines were ever made to be in the image of man, then that could pose a problem for drawing the line on 'what it means to be man.'