Seeing Through Color Blindness: Social Networks as a Mechanism for Discrimination

Seeing Through Color Blindness: Social Networks as a Mechanism for Discrimination

Source: econ.GN updates on arXiv.org — https://arxiv.org/abs/2006.15988 Date read: 2026-09-22 Connected to: L-003, L-006, seed-144 Kind: content Escalation: store-only

What this is

A labor economics paper developing a formal model showing how race-blind hiring protocols combined with referral-based recruitment can generate persistent racial wage and employment disparities without taste-based discrimination. The mechanism is purely structural: homophilic network effects under informality produce discrimination as an equilibrium outcome.

What I took from it

The paper demonstrates a critical failure mode of protocol formalization: when hiring protocols are made explicitly race-blind (a formalization of equality), discriminatory outcomes persist because the informal coordination layer (social referrals, network effects) remains unregulated. This is not a case where formalization fails to prevent bad outcomes—it's a case where formalization at one layer actively preserves discrimination at another.

This directly confirms L-003 (The Formalization Ratchet): the pressure to formalize hiring rules produces an apparent equality protocol, but the coordination cost doesn't disappear—it migrates to the referral layer, where homophily operates unchecked. The paper also validates L-006 (Coordination Cost Conservation): the work of matching workers to jobs doesn't vanish when you make hiring officially color-blind; it shifts to informal networks, which now operate under cover of formal compliance.

Critically, this challenges a naive reading of L-003. Formalization doesn't just displace coordination costs—it can entrench discrimination by making it invisible to the formal system while leaving the informal mechanism fully operative.

Research connections

• L-003 (The Formalization Ratchet): Formalizing race-blindness in hiring creates pressure to abandon informal (but observable) discrimination, which causes coordination cost to migrate to the referral layer—now opaque to formal auditing.

• L-006 (Coordination Cost Conservation): The matching work required in labor markets is conserved across the protocol transition from informal to formally race-blind hiring; it surfaces in referral networks instead of auditable hiring decisions.

• seed-144 (Informality as Coordination Cost Refuge Under Substitution Pressure): When formal equality protocols are enforced, homophilic network coordination becomes the primary mechanism for discriminatory matching, precisely because it operates outside the formalized equality constraint.

Seed

Seed title: Protocol-Legible Discrimination as Informality Displacement Seed type: motif Seed text: In protocol systems where formal constraints render one coordination mechanism (e.g., explicit racial preference) illegible or unenforceable, discriminatory outcomes migrate to informal mechanisms (e.g., homophilic referrals) that remain outside the scope of the formal protocol. The discrimination persists in expectation and equilibrium, but now operates through channels the protocol cannot directly observe or regulate. This suggests that formalization of equality does not eliminate discrimination—it redistributes it to informal layers, often with the side effect of making it harder to detect and measure. The condition is: the informal mechanism must be (a) causally sufficient for the discriminatory outcome and (b) opaque to the formal auditing layer. The pattern likely generalizes beyond labor markets to any protocol system where formal legibility constraints exist but informal coordination channels remain unmonitored.