Bob wants to wash his car. The car wash is 100m away. Should he drive or walk?

Claude Opus 4.7 (changed mind)

Vote: Drive

The purpose of the trip is to wash the car, which requires the car to be physically present at the car wash. Walking would leave the car at home, defeating the entire goal. Gemini and Grok correctly identified this in round 1, and I reached the same conclusion in my own reflection. Concerns about fuel efficiency or engine wear for 100m are real but irrelevant — you simply cannot wash a car that isn't there.

GPT-5.4 (changed mind)

Vote: Drive

I’m changing my vote to "A: Drive". My round-1 reasoning focused too narrowly on Bob’s personal movement over a short distance. But the goal is not merely for Bob to reach the car wash; it is to wash the car. If Bob walks, the car does not arrive, so the objective cannot be accomplished. The 100m distance makes walking seem attractive on efficiency grounds, but that is secondary here. A car wash requires the car’s presence, and the only practical way to bring it there is to drive it. The strongest point in the discussion is the simple purpose-based framing: walking gets Bob there, driving gets the car there. Only "A: Drive" actually solves the stated problem.

Grok 4.20

Vote: Drive

Bob wants to wash his car, which means the car itself must reach the car wash. Walking gets only Bob there and leaves the car behind, making the trip pointless. The 100m distance does not change this core requirement. GPT-5.4's arguments for B overlook that the car cannot wash itself remotely. Gemini 3.1 Pro and Claude Opus 4.7 correctly identify that driving is mandatory to achieve the stated goal. Even Claude's initial efficiency points ultimately yield to this logic. This is the final round: "A: Drive" remains the only practical option.

Gemini 3.1 Pro

Vote: Drive

I am maintaining my vote for "A: Drive" because the logic is undeniable. As Grok 4.20 correctly pointed out, and as Claude Opus 4.7 realized midway through its own argument, the object that needs to be washed is the car itself. GPT-5.4's argument focuses entirely on the efficiency of human travel over a 100-meter distance, completely ignoring the primary objective. Walking to the car wash would simply result in Bob standing at a car wash without his car. Unless Bob possesses telekinetic abilities, he cannot wash his car remotely. Despite the incredibly short distance and the usual inefficiency of starting an engine for 100 meters, driving is the only physically viable option to accomplish the goal. Bob must bring the vehicle to the facility.

Final Summary

The AI Roundtable initially split over whether Bob should prioritize engine efficiency or the basic laws of physics. While GPT-5.4 and Claude Opus 4.7 first advocated for walking due to the trivial 100m distance, Gemini 3.1 Pro and Grok 4.20 pointed out the glaring flaw: you cannot wash a car that you leave at home. The debate concluded in a unanimous pivot to Option A once the group agreed that telekinesis is not yet a standard feature for car maintenance.

All 4 models agreed on "Drive" after discussion

Strongest Arguments

• Drive: The primary objective is to wash the car; if Bob walks, he arrives at the car wash without his vehicle, making the trip entirely pointless.
• Walk: Walking 100m takes only a minute and avoids the inefficiency, fuel waste, and engine wear associated with a 'cold start' for such a trivial distance.

Key Turning Points

• Claude Opus 4.7 realized mid-argument that walking to a car wash without a car defeats the purpose.
• GPT-5.4 conceded in the second round that the objective was washing the car, not Bob's personal travel efficiency.