Purdue's GPS-free drone tracks runners through forests; Rachel Thomas asks if it should exist
mmitchell_ai · x · 2026-10-29
Purdue University's IDEAS Lab built an autonomous drone that tracks runners through dense forests without GPS or cloud networks, running 3D LiDAR mapping and obstacle-avoidance AI entirely on-chip — weaving under canopies and predicting target movement through blind spots in real time, with big implications for search & rescue and edge AI.
But fast.ai co-founder Rachel Thomas, while retweeting, cites the paper "When the Implication Is Not to Design (Technology)" and poses three screening questions: does the intervention cause more trouble or harm than it addresses? Could an equally viable low- or non-tech approach replace it? And does it solve a computationally tractable transformation of the problem rather than the problem itself?
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