==How do we know what other browser engines think?==
* Some Most of the time this should fall out of them participate in dev-platform discussions* Watch for positive signals on the specification's standardization process (e.g., discussion forum (likely in a GitHub repository)
* Watch for "intent to *" emails on mailing lists such as [https://groups.google.com/a/chromium.org/forum/#!forum/blink-dev blink-dev]
* By asking!
==How do we let other browser engines know what we think?==