Opinion of the Court
allegations, these platforms appear to transmit most content without inspecting it.
The mere creation of those platforms, however, is not culpable. To be sure, it might be that bad actors like ISIS are able to use platforms like defendants’ for illegal—and sometimes terrible—ends. But the same could be said of cell phones, email, or the internet generally. Yet, we generally do not think that internet or cell service providers incur culpability merely for providing their services to the public writ large. Nor do we think that such providers would normally be described as aiding and abetting, for example, illegal drug deals brokered over cell phones—even if the provider’s conference-call or video-call features made the sale easier. See Doe v. GTE Corp., 347 F. 3d 655, 659 (CA7 2003).
To be sure, plaintiffs assert that defendants’ “recommendation” algorithms go beyond passive aid and constitute active, substantial assistance. We disagree. By plaintiffs’ own telling, their claim is based on defendants’ “provision of the infrastructure which provides material support to ISIS.” App. 53. Viewed properly, defendants’ “recommendation” algorithms are merely part of that infrastructure. All the content on their platforms is filtered through these algorithms, which allegedly sort the content by information and inputs provided by users and found in the content itself. As presented here, the algorithms appear agnostic as to the nature of the content, matching any content (including ISIS’ content) with any user who is more likely to view that content. The fact that these algorithms matched some ISIS content with some users thus does not convert defendants’ passive assistance into active abetting. Once the platform and sorting-tool algorithms were up and running, defendants at most allegedly stood back and watched; they are not alleged to have taken any further action with respect to ISIS.
At bottom, then, the claim here rests less on affirmative
