## 5 Discussion  
### Applicability of PCA-AHP-QFD Integration in Different Study Industries  
This section evaluates how the integration of PCA with AHP-QFD is appropriate for the selected study industries, considering their unique challenges and the potential benefits of the methodology. 1. Logistics Industry Key Challenges: The logistics industry involves complex, multifaceted operations requiring precise coordination and efficient resource utilization. Prioritizing features that optimize cargo handling and storage while ensuring compliance with stringent regulatory standards is a significant challenge [56]. Additionally, logistics service centers must be resilient to disruptions caused by events such as natural disasters or operational failures, which can lead to severe congestion and reduced service quality [57]. The selection of an optimal site for airport cargo logistics centers also poses a strategic challenge, requiring consideration of multiple objectives and constraints such as budget allocation, customer requirements, and operational efficiency [23]. \begin{table}
\begin{tabular}{p{113.8 pt} p{113.8 pt}} \hline \hline
**Participant Expertise** & **Opinion** \\ \hline Environmental Technical Artists in the Game Industry (6 Years’ Experience) & Method 2 is faster because it evaluates a single dimension. However, Method 1 might provide more accurate answers in specific contexts, saving time in the long run. \\ \hline Senior IT Specialist/robotic system design (15 Years’ Experience) & Method 2 is better for evaluation and decision-making, but Method 1 emphasizes detailed requirements. \\ \hline IT/Front-End Developer (8 Years’ Experience) & Method 2 can reduce evaluation time by 70\%. \\ \hline \multirow{6}{*}{Product and Innovation Design Research Center (4 Years’ Experience/2 Years’ Experience)} & Method 2 is more effective because its results are less complex, making it faster to evaluate key features. Within limited time, Method 2 provides more accurate evaluations. \\ \cline{1-1}  & However, with unlimited time, both methods are equally accurate, though Method 1 requires more experience and time. \\ \cline{1-1}  & Method 2 remains a suitable choice because its results are quicker to interpret, reducing time. However, if the decision-maker lacks experience, Method 1 might be more accurate but requires more time. \\ \hline \multirow{6}{*}{Interaction Design and Innovation Master Students (3 Years’ Experience in Banking system, 2 Years’ Experience as UK/UI design student)} & Method 2 is quicker for identifying key requirements due to its visual and ordered presentation. \\ \cline{1-1}  & Method 2 can reduce time by 40\%, though it might require an additional 20\% for re-evaluation. Method 1 is better for detailed understanding. Method 1 should still be prioritized for deep understanding, even though Method 2 helps reduce time. Method 1 is suitable for ministerial-level analysis, while Method 2 is for managerial and decision-making levels. \\ \hline \multirow{6}{*}{Innovation Designer (10 Years’ Experience)} & Method 2 can reduce the time needed for defining important features by 70\%. \\ \cline{1-1}  & Method 2 might take slightly more time in pre-analysis but benefits the design phase by reducing overall time. \\ \hline \multirow{6}{*}{Educational Designers (33 Years’ Experience)} & Method 2 can reduce time by 90\% due to its straightforward and clear results, which are easier and faster to interpret, making it more efficient. \\ \cline{1-1}  & Method 2 is more efficient, even if it takes slightly more time in pre-analysis, as it provides 90\% efficiency in aligning with CRs. \\ \hline \multirow{6}{*}{Traffic and Route Designers (41 Years’ Experience)} & Method 2 can reduce time by 95\% due to its clear and quick interpretation of results. \\ \cline{1-1}  & Method 2, despite taking more time in preparation, offers clearer and more efficient results, highly favored by clients. \\ \hline \hline \end{tabular}
\end{table} 
Table 11: Expert opinions on the effectiveness and appropriateness of method.