Like any conditioning, the similarities between John and Lenina’s conditioning are fairly obvious.

Reflex Quotations: both John and Lenina respond to target stimuli with direct quotations from their conditioning source (Shakespeare for John, Hypnopaedic sleep therapy for Lenina).

Moral Structure: Both base their moral reasoning off of their respective conditioning i.e. Lenina finds monogamy filthy while John thinks the opposite. Both of these responses are (to varying degrees) not their independent conclusions but notions implanted in their brains.

Cage: Because both of the pairs conditioning is so deep, neither John nor Lenina are able to see beyond their existing moral structure, finding each other to be nearly incomprehensible.

Despite the similarities, there are significant enough differences in John and Lenina’s conditioning to merit notice

Magnitude and Method: Lenina’s condition was accomplished thousands of recitations of her beliefs starting at the beginning of her life while John studied Shakespeare frequently after he had some development as a person. The result of this is that John has a more unique and independent identity, while Lenina is mostly the Hypnopaedic lessons encased in flesh.

Intent: Lenina’s conditioning is deliberately developed as a cage to restrict her growth and actions, while John’s Shakespeare is an aesthetic work meant to, if any explicit purpose, exalt the soul rather than chain it. This meant little in regards to the chaining effect it had on him.