Will vs. would

will vs. would

The passage below comes from a book, Reality: A Very Short Introduction, as follows:

https://books.google.co.kr/books?id=RNgbsBH0ccsC&pg=PA8&lpg=PA8&dq=%22would+no+longer+be+dependent+on+its+former+body+for%22&source=bl&ots=23Bvwh9371&sig=z4th_BZKHZ1RE_GetJ8jkYOVQ3g&hl=en&sa=X&ved=0CBwQ6AEwAGoVChMIzuL_n9KexwIVx9mmCh3xlAmI#v=onepage&q=%22would%20no%20longer%20be%20dependent%20on%20its%20former%20body%20for%22&f=false

Modern medical technology allows us to keep alive human beings lacking a variety of vital organs, such as the heart or the kidneys. Soon, there will be functional artificial lungs and livers, and it is not too much of a stretch of the imagination to suggest that at some time in the future we will be able to sustain the life of a human brain even though its body has been destroyed. Such a brain will be supplied with nutrients via a blood substitute, usually an oxygenated solution of various salts, and would no longer be dependent on its former body for life-sustaining functions. Success in this direction has been achieved with the brains of guinea pigs, and it seems to be only a matter of time before medical science can do the same with the brains of humans.

In this passage the underlined modal-auxiliary-verbs 'will' and 'would' are used in the seems-to-me-the-same meaning and role in my grammatical sense.

Am I right?
(If not, can you tell me the difference between them and if you can, example sentences are much obliged.)

Regards.