Some data on "filtering," also known as "trickle-down" housing in SF progressive politics.https://twitter.com/DanielKayHertz/status/664534532541063168 …
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@kimmaicutler filtering will help a non-wealthy person decades from now, but new housing protects existing stock on day 1
@alevin @kimmaicutler yes imo useful to discuss together a) filtering - how supply helps over time; b) fungibillity - how supply helps now.
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