台灣2004年規劃以WiMAX為骨幹建設全國「寬頻無線網路」系統，其投資高達260億元。然而考察近年來一些國際上之射頻輻射健康影響研究，除了已知知識的部分提到：無法證明射頻輻射有健康危害，尚有一些研究具有知識上的不確定性以及隨之而來的科學解釋與價值判斷的爭議，因此也不能完全排除其潛在健康風險之可能。Stirling提出的知識不確定矩陣，區分出已知知識、知識不確定性以及模稜兩可的科學解釋與價值判斷，已知知識可以採用傳統的風險評估工具，但其他範疇則需要風險溝通等不同方法來進行管理。研究發現我國WiMAX計畫之決策和執行過程，缺乏公衛、醫學等多元專家參與決策或徵求健康評估相關計畫，未對其健康風險進行良好風險溝通並開放公民參與管道，政府委託研究無法影響既定之政策，政府也並未遵循研究建議，改善現有治理架構。本文建議WiMAX應參考加州與歐盟對行動通訊電磁波之風險治理實踐作法，進行擴大科學審查和公民參與等新興風險治理典範，以形塑優質的科技決策。

WiMAX is a brand new mobile communication technology whose impact on health and the environment has never been fully researched and evaluated by Taiwanese academia or regulatory departments such as the Environmental Protection Administration (EPA). This article introduces WiMAX technology, reviews the international scientific literature, investigates the potential health risks of WiMAX, considers risk management in Taiwan, and applies the concept of Uncertain Matrix of Knowledge. We found that the government used insufficient scientific evidence prior to drawing up and implementing WiMAX policy. The principles of deliberative and participatory democracy in Taiwan were eroded and ignored. By introducing the concept of the Uncertain Matrix of Knowledge and the methodology of the California EMF Program and SCENIHR, we addressed the problems of risk management and WiMAX policy making in Taiwan and also gave suggestions such as extended peer communities, technological democracy and risk communication.