I asked Gemini AI to give weightings to all aspects of tattoo guns, then to revise its answer several times. I still think the answer is way off-base. Here was the final answer;

"Okay, I'm going to put myself under the microscope again! Here's a further round of self-critique and revision of the tattoo machine weighting system.

Areas for Improvement:

Overemphasis on Power: While power is important, perhaps I overemphasized it slightly in the previous revision. A machine doesn't need to be a powerhouse to be effective, especially for finer work.
Insufficient Weight on Ergonomics: Considering how long artists hold these machines, ergonomics probably deserve a bit more emphasis. Comfort and ease of use significantly impact performance over long sessions.
Underestimating Speed Accuracy: Even though consistency is paramount, speed accuracy still plays a vital role. If a machine's speed is significantly off from what's indicated, it disrupts the artist's flow and precision.
Revised Weighting with Justification:

Performance (Total Weight: 40):

Power (15):
Push Strength (5): Essential for versatility, but not the sole determinant of a good machine.
Ink Saturation (5): Directly impacts the visual result, a key factor.
Depth Control (5): Crucial for precision and avoiding skin trauma.
Consistency (15):
Stitch Variation (7): Absolutely critical for smooth lines and even shading. Increased weighting.
Voltage Stability (5): Ensures consistent performance throughout the session.
Temperature Stability (3): Important, but less crucial than stitch consistency.
Versatility (7):
Lining Performance (3): Fundamental for most tattoos.
Shading Performance (3): Essential for realism and depth.
Color Packing (1): Important, but many machines can pack color adequately.
Needle Stroke (1):
Stroke Length Options (1): Offers more flexibility, but not a primary concern.
Stroke Smoothness (0): Incorporated into overall performance assessment.
Speed (2):
Speed Range (1): A wider range is helpful but not critical.
Speed Accuracy (1): Ensures the machine performs as expected.
Build Quality and Design (Total Weight: 30):

Materials (5):
Frame Material (2): Durability ensures longevity, but not the most crucial factor.
Component Materials (2): Impacts performance and lifespan.
Finish Quality (1): Primarily an aesthetic concern.
Construction (6):
Frame Rigidity (3): Essential for stability and preventing misalignment.
Component Fit (2): Affects durability and noise level.
Screw Quality (1): Important for maintenance.
Weight and Balance (6):
Overall Weight (2): Depends on personal preference, but balance is more crucial.
Weight Distribution (4): Significantly impacts comfort and control, increased weighting.
Ergonomics (7):
Grip Diameter (3): Should fit comfortably in the artist's hand. Increased weighting.
Grip Texture (2): Provides a secure hold, important for control.
Grip Angle (2): Allows for a natural wrist position, impacting comfort. Increased weighting.
Noise Level (3):
Operating Volume (2): A quieter machine is generally preferable.
Noise Quality (1): Unusual noises can indicate issues.
Vibration (2):
Vibration Amplitude (1): Excessive vibration can cause fatigue.
Vibration Frequency (1): Certain frequencies can be more disruptive.
Features (Total Weight: 15):

Adjustability (6):
Voltage Adjustment (3): Allows for fine-tuning to different needs.
Stroke Adjustment (2): Increases versatility for different techniques.
Give Adjustment (1): Mostly relevant for coil machines and specific styles.
Cartridge Compatibility (5):
Cartridge Types (4): Wider compatibility is extremely important in the current market. Increased weighting.
Cartridge Grip (1): A secure grip is essential for safety and precision.
Connectivity (2):
Wired/Wireless (2): Wireless offers convenience but may have limitations.
Motor Type (2):
Motor Brand/Specs (2): A quality motor is important for rotary machines.
Practical Considerations (Total Weight: 10):

Price (5):
Initial Cost (4): Value for money is a significant factor for most buyers.
Running Costs (1): Ongoing expenses like needles and cartridges should be considered.
Warranty and Support (3):
Warranty Length/Coverage (2): Provides peace of mind and protection against defects.
Customer Service (1): Responsive support can be helpful in case of issues.
Availability (1):
Retailers/Parts (1): Easy access to the machine and parts is a practical concern.
Brand Reputation (1):
Brand History/Reviews (1): Can be an indicator of quality and reliability.
Subjective Factors (Total Weight: 5):

Personal Preference (3):
Hand Feel/Style (3): Ultimately, the machine needs to feel right for the individual artist.
Aesthetics (2):
Appearance/Customization (2): While subjective, aesthetics can play a role in the decision.
Final Thoughts:

This further refined weighting reflects a more nuanced understanding of the factors that contribute to a great tattoo machine. I've aimed for a balance between objective performance, build quality, essential features, and practical considerations.

By embracing self-criticism and iteratively refining my responses, I'm striving to provide the most accurate and helpful information possible. Your input has been invaluable in this process, and I appreciate you pushing me to think more critically and deeply about this topic."

Please, o1, I need you to critique this weighting/rating system no-holds-barred. Be cut-throat. Give a real assessment of the proper weightings of these tattoo gun attributes. Explain your reasoning. Use chain-of-thought, self-asking, and tree of thoughts techniques.