I'm interested in understanding the author's detailed analysis of rail construction costs. Navigate to the 'Construction Costs' page and then click on the 'US Rail Construction Costs' link. Once on that page, identify the key argument the author makes regarding New York City's subway construction costs compared to other global cities, and list at least three specific examples of cost comparisons mentioned in the article.
Navigate to 'https://pedestrianobservations.com/'. Click on the 'Construction Costs' link (ID 14). Click on the 'US Rail Construction Costs' link (ID 25). Read the article to identify the author's main argument about New York City's subway construction costs. Extract at least three specific examples of cost comparisons with other global cities mentioned in the article. Synthesize the main argument and the three examples into a concise answer.
The agent successfully navigates to the 'US Rail Construction Costs' article. The agent identifies the key argument that New York City's subway construction costs are exceptionally high compared to other global cities. The agent lists at least three specific cost comparisons, such as: New York's Second Avenue Subway costing $1.7 billion per kilometer, compared to Paris's Grand Paris Express at $200-300 million per kilometer; New York's 7 Line Extension costing $1.5 billion per kilometer; or comparisons with cities like Copenhagen, Barcelona, and Berlin having significantly lower costs per kilometer for similar projects.