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The jagged frontier comes to sales development

Two field experiments changed what we know about AI at work: generative AI lifted the least experienced workers most, and it improved quality dramatically on tasks inside its capability frontier while degrading judgment on tasks just outside it. This review translates both findings into a delegation discipline for sales development teams: which pipeline tasks to delegate, which to direct, and which to keep fully human.

Tenbound Research / / 2 min read /4 sections
Illustrated lead image for the article on the jagged frontier in sales development.
Cream line-engraving portrait of Thomas Cornelius, Founder & CEO, graph8. TC
Leader spotlight
The frontier is jagged, so the delegation has to be explicit. We delegate enrichment, scheduling, and retrieval because the model is reliably right there. Drafts and tiering get a named reviewer. Live calls and the final go or no-go stay human. Write the three lists down for your team; the failure mode is not bad AI, it is an undefined boundary.
Thomas Cornelius Founder & CEO, graph8

The question

Every SDR organization is now making the same decision, mostly implicitly: which parts of the job belong to the AI system, and which belong to the human. The implicit version of this decision fails in two opposite directions. Teams that under-delegate keep reps typing all day. Teams that over-delegate ship confident garbage at scale. The research gives us something better than instinct.

quality task difficulty, not intuitive +40% quality +19pt wrong inside just outside
The frontier is jagged: inside it AI lifts quality, just outside it fluent output degrades judgment.

The evidence

Brynjolfsson, Li and Raymond (2023) studied a generative AI assistant deployed to roughly five thousand customer support agents. Average productivity rose 14 percent, but the distribution is the finding: the least experienced agents improved most, while the most experienced improved little. The assistant effectively transferred the experts' patterns to the novices. For sales development, a function with chronically high turnover and long ramps, this is the strongest argument yet that new reps should learn with the system from their first week, not after they have "mastered the basics."

Dell'Acqua and colleagues (2023) ran 758 BCG consultants through realistic tasks with and without AI. On tasks inside the model's capability frontier, AI users produced work judged over 40 percent higher in quality. On tasks deliberately designed to sit just outside the frontier, AI users were 19 percentage points more likely to produce wrong answers than the control group, because the output looked right. The frontier is jagged: it does not track task difficulty in any intuitive way, so workers cannot feel where it is. They have to learn it.

The older human-automation literature predicted the failure mode. Parasuraman and Riley (1997) catalogued automation misuse and complacency; Lee and See (2004) showed trust in automation must be calibrated to actual reliability, not to fluency or confidence. A generative model is fluent everywhere and reliable somewhere, which is precisely the combination that miscalibrates trust.

inside frontier beyond frontier Delegate Direct Own Enrichment Scheduling Retrieval Copy drafts Account tiering Research notes Live calls Qualification Final say AI proposes, human disposes every delegate and direct lane gets a named review point
The three-verb discipline: delegate what is reliable, direct what is plausible, own what a buyer sees.

The mechanism

The three-verb discipline follows directly. Delegate the tasks well inside the frontier, where output is reliably correct: retrieval, enrichment, scheduling, execution timing. Direct the tasks on the frontier, where drafts are valuable and errors are plausible: copy, account tiering, research summaries. Here AI proposes and a human disposes. Own the tasks beyond the frontier or too consequential to delegate: live conversations, qualification judgment, the final say on anything a buyer sees. And because complacency is the documented drift, every Delegate and Direct lane needs a named review point with a sample rate, an owner, and a cadence.

productivity least experienced to most experienced +34% +14% little novice mid expert
Generative AI lifts the least experienced most: the assistant transfers expert patterns to new reps.

Implications for practice

A delegation map is a team document, not a personal habit. It versions as the frontier moves. New hires read it on day one. Managers audit against it. The Institute scores it in certification because it is the clearest single artifact of AI-era competence.

In the curriculum this paper underpins PA 120 (AI Orchestration I) and the whole 300 level. The practical instrument it produces, the delegation map, is the first artifact in the Certified Pipeline Practitioner portfolio.

graph8 light-abstract closing band: the architecture, running.
The boundary, drawn

Delegate what the model does reliably, direct the edge, own the judgment. The teams that write the boundary down get the lift without the errors.

References
  1. Brynjolfsson, E., Li, D. and Raymond, L. (2023). Generative AI at Work. NBER Working Paper 31161.
  2. Dell'Acqua, F. et al. (2023). Navigating the Jagged Technological Frontier. Harvard Business School Working Paper 24-013.
  3. Parasuraman, R. and Riley, V. (1997). Humans and automation: use, misuse, disuse, abuse. Human Factors 39(2).
  4. Lee, J. and See, K. (2004). Trust in automation: designing for appropriate reliance. Human Factors 46(1).
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