Distributed systems are preferable to centralized ones

Distribution of core roles creates greater tolerance for fault and failure, generally preventing unfortunate events within a single node from having as large of an impact on the system as they may otherwise.

Distributed systems are preferable to centralized ones

This is only a positive attribute if the system in question would benefit from a reduction of censorship - a concept which may apply to everything from limiting political discussion to prohibiting antagonistic content.

Animal testing is necessary to advance medical research.

It should be phased out of use on sentient creatures as technological alternatives permit.