## 5 Discussion
### Applicability of PCA-AHP-QFD Integration in Different Study Industries
Furthermore, the logistics companies in urban areas must adapt to regulations aimed at reducing environmental impacts, such as minimizing CO2 emissions and managing urban traffic congestion, which add another layer of complexity to operations [58]. Applicability of PCA-AHP-QFD: Integrating PCA with AHP-QFD in this context allows for clearer identification and prioritization of key features by reducing the complexity of the AHP-QFD matrices. Expert feedback supports this ability, with 75% of participants preferring this method for its clarity and accuracy, and 100% for speed. The integration also enhances the system's resilience by optimizing the configuration of logistics service centers to withstand disruptions. Additionally, this method can support sustainable logistics practices by providing a structured approach to evaluating and selecting appropriate strategies for logistics operations. This kind of approach takes into account various stakeholder needs and ensures alignment with organizational objectives [59]. 2. Personal/Consumer Electronics Industry Key Challenges: The personal and consumer electronics industry faces significant challenges in designing new products, some of which have already been suggested in the literature review part. Prioritizing customer needs is crucial for developing successful products [7; 24; 38; 60]. Effectively addressing these needs can provide a market advantage, as products aligned with customer desires are more likely to succeed [24; 35; 36; 38]. Recent trends show increasing product requirements and rapidly evolving markets demanding precise developments in shorter cycles [8; 9]. This complexity necessitates precise designs with numerous variables, making design decisions more challenging and extending development times [8; 9; 10; 11]. Applicability of PCA-AHP-QFD: The application of PCA simplifies the complexity of AHP-QFD matrices, aiding in the prioritization of critical features with the first four components explaining 86.9% of the variance in Dataset X3. This approach facilitates efficient decision-making in new product development, reduces development cycle time, and enhances alignment with customer needs, thereby improving market acceptance and competitiveness. According to the expert feedback, 75% found it clearer, 87.5% preferred the speed of evaluations with PCA, and 62.5% found it more accurate. To effectively meet the challenges previously mentioned, methodologies like PCA-AHP-QFD can systematically prioritize and integrate customer requirements into the design process [60; 61]. 3. Healthcare/Medical Industry Key Challenges: The healthcare/medical industry demands high precision and reliability in product design to ensure patient safety and regulatory compliance. The design and development of medical devices, such as temperature-controlled medicine bags, must account for various factors including user safety, efficacy, and compliance with healthcare regulations [30]. Additionally, there are substantial challenges in incorporating patient-centric designs that address the needs of diverse patient populations, particularly older adults and those with chronic conditions [62]. Healthcare providers face increasing complexity due to the evolving nature of diseases and the need for personalized medicine. This complexity necessitates robust design methodologies that can manage multiple variables and ensure the highest quality standards [63]. The importance of integrating feedback from patients and healthcare professionals into the design process to enhance the usability and effectiveness of medical devices is also highlighted [62]. Furthermore, the development of intelligent healthcare products, such as home blood glucose monitors, highlights the need for aging-friendly design that aligns technological advancements with user-centric principles, ensuring accessibility and usability for elderly users [64].