While the social networks artificially orchestrate this faux serendipity (it only seems serendipitous because the algorithms are tailoring the streams to what we have already consumed) more genuine online serendipity still occurs, you just have to foster the right environment — getting away from the networks and towards more direct content consumption. Admittedly, this still leaves us without that direct face-to-face human connection but it can be enjoyed. I say "more genuine" as those whose work we consume online is likely to be already influenced by our own "human algorithm" so not truly serendipitous but the possibility still exists.
On the temporary suspension of serendipity
While the social networks artificially orchestrate this faux serendipity (it only seems serendipitous because the algorithms are tailoring the streams to what we have already consumed) more genuine online serendipity still occurs, you just have to foster the right environment — getting away from the networks and towards more direct content consumption. Admittedly, this still leaves us without that direct face-to-face human connection but it can be enjoyed. I say "more genuine" as those whose work we consume online is likely to be already influenced by our own "human algorithm" so not truly serendipitous but the possibility still exists.