Lavinia Marin

Lavinia Marin

Lavinia Marin is a philosopher of technology at Delft University of Technology and a co-author of the 2024 Topoi paper that treats social media platforms as attentional scaffolds. It is the strongest published version of the argument that what matters about a feed is the reinforcement schedule it runs on, and not whether anyone designed it that way on purpose.

Who they are

The slot-machine comparison is made constantly and is usually made badly. The ordinary version claims that platforms were built to exploit variable-ratio reinforcement, the schedule that makes gambling machines hard to leave, and it rests on an assumption about designers' intent that is very difficult to evidence.

Voinea, Marin and Vică take the argument apart and rebuild it without that assumption. Their case is structural. A feed that delivers unpredictable rewards at unpredictable intervals has the properties of a variable-ratio schedule whether it was engineered to or arrived there by optimisation, and the effect on attention does not depend on how it got there. Intent is a claim about people. The scaffold is a claim about the environment, and the environment is what acts on a user.

Calling it a scaffold is doing real work. A scaffold is a structure that supports and shapes an activity that could in principle be carried out without it, and attentional scaffolding describes an environment that takes over part of the work of directing attention. On that description the question is not whether a platform is addictive but what it is holding up and what it has replaced.

This site records what the argument is and what it is not. It is philosophy of technology, a structural argument built on an established behavioural literature, and it is not an experiment. It does not supply evidence that feeds produce the outcomes attributed to them, and it does not claim to. Its strength is that it survives the objection that sinks the popular version, which is that nobody can show what the designers meant.

Key papers

Voinea, C., Marin, L., & Vică, C. (2024). "Digital Slot Machines: Social Media Platforms as Attentional Scaffolds." Topoi. Co-author. Treats platforms as attentional scaffolds built on a variable-ratio reinforcement schedule, and argues the structural case without depending on any account of how the schedule came about. This site cites it as the strongest published statement of that position, and as a structural argument rather than an experiment.

Key ideas

Attentional scaffolding: an environment that takes over part of the work of directing attention, supporting and shaping an activity rather than merely hosting it.

The schedule is what matters, not its origin. A variable-ratio pattern of reward acts on a user the same way whether it was designed or optimised into existence.

Intent is the weak point of the popular slot-machine claim, and this argument is built so as not to need it.

It is a structural argument and not a finding. Whatever it establishes, it does not establish an effect size.


Sources

  1. Voinea, C., Marin, L., & Vică, C. (2024). "Digital Slot Machines: Social Media Platforms as Attentional Scaffolds." Topoi.
  2. Vault note: [[Lavinia Marin]], which records her co-author role. Links checked 2026-09-10; both links are published on her TU Delft faculty page.