TLS (or more accurately, the set of browser-trusted X.509 root CAs) is extremely hierarchical and all-or-nothing.
The PGP web of trust is non-hierarchical and decentralized (from an organizational point of view). That unfortunately makes it both more complex and less predictable, which I suppose is why it “lost” (not that it’s actually gone, but I personally have about one or maybe two trusted, non-expired keys left in my keyring).
TLS (or more accurately, the set of browser-trusted X.509 root CAs) is extremely hierarchical and all-or-nothing.
The PGP web of trust is non-hierarchical and decentralized (from an organizational point of view). That unfortunately makes it both more complex and less predictable, which I suppose is why it “lost” (not that it’s actually gone, but I personally have about one or maybe two trusted, non-expired keys left in my keyring).