NP, I can see why that might have been read in a different way.<p>I may have mixed my points up a bit, but basically I&#x27;ve noticed that they seem to lump quite a few things under &quot;engagement&quot; (an autoplayed video that plays for 3 seconds from someone scrolling in their feed is apparently a valid view).  I&#x27;m using engagement in the broader sense, not the specific definition in the FB platform here, although it is pretty all encompassing there as well in terms of Likes&#x2F;Comments&#x2F;Shares (none of which are really the apples to apples at all).<p>My bigger beef is on the view-through side.  Attribution windows alone don&#x27;t dictate attribution weighting.  You really need to be measuring incremental lift, otherwise you end up with lots of people seeing an ad and a ton of view-throughs, but a lot of wasted spend since many would have converted without the impression.