1. Aesthetics - 0.1
1.1. Inconspicuous - 0.4 (0.04)
1.1.1. Integrate Into Current Structures - 0.3 (0.012)
1.1.2. Hidden When Not in Use - 0.7 (0.028)
1.2. Aesthetically Pleasing - 0.6 (0.06)
1.2.1. Multiple Colors/Finishes - 0.8 (0.048)
1.2.2. Able to be Painted - 0.2 (0.012)
2. Effective/Reliable - 0.2
2.1. Equal Performance for Varied Load Sizes - 0.4 (0.08)
2.1.1. Able to Carry at Least One 50lb Load - 0.9 (0.072)
2.1.2. Able to Connect Different Size/Types of Loads - 0.1 (0.008)
2.2. Secure Structure/Foundation - 0.2 (0.04)
2.3. Operate in Many Environments - 0.1 (0.02)
2.3.1. High/Low Temperatures - 0.4 (0.008)
2.3.2. Moisture/Dampness Protection - 0.6 (0.012)
2.4. Durable - 0.3 (0.06)
2.4.1. Few Moving/Complicated Parts - 0.3 (0.018)
2.4.2. Long Life of Components - 0.7 (0.042)
3. Affordable - 0.1
3.1. Reduce Operating Costs - 0.3 (0.03)
3.1.1. Energy Efficient - 0.5 (0.015)
3.1.2. Inexpensive to Repair/Maintain - 0.5 (0.015)
3.2. Reduce Build Costs - 0.7 (0.07)
3.2.1. Utilize Existing Technology - 0.1 (0.007)
3.2.2. Simple Design - 0.45 (0.0315)
3.2.3. Common Materials - 0.45 (0.0315)
4. Safe - 0.3
4.1. Prevent Overloading - 0.1 (0.03)
4.1.1. Weight Detection - 0.2 (0.006)
4.1.2. Must Turn Off When Load Reached Top - 0.8 (0.024)
4.2. Prevent Stair Climber Interference - 0.3 (0.09)
4.2.1. Integrate Outside Stair Climber's Space - 0.6 (0.054)
4.2.2. Build Inside an Existing Structure - 0.1 (0.009)
4.2.3. Minimize Sharp Edges and Hooks - 0.3 (0.027)
4.3. Prevent User Pinch Points - 0.2 (0.06)
4.3.1. Emergency/Pressure Sensitive Feedback - 0.7 (0.042)
4.3.2. Internal Components - 0.3 (0.018)
4.4. Prevent Electrocution - 0.3 (0.09)
4.4.1. Inaccessible Wiring - 0.8 (0.072)
4.4.2. DC Power - 0.2 (0.018)
4.5. Safe for All Types of Users - 0.1 (0.03)
4.5.1. Elderly - 0.7 (0.021)
4.5.2. Children - 0.3 (0.009)
5. Convenience - 0.15
5.1. Easy to Operate - 0.3 (0.045)
5.1.1. Hands Free Activation - 0.3 (0.0135)
5.1.2. Simple Controls - 0.7 (0.0315)
5.2. Easy to Attach/Detach the Load - 0.3 (0.045)
5.2.1. Able to Connect Different Size/Types of Loads - 0.6 (0.027)
5.2.2. Multiple Loads - 0.4 (0.018)