Comment by wujerry2000

For fun, I calculated how this stacks up against other humanity-scale mega projects.

Mega Project Rankings (USD Inflation Adjusted)

The New Deal: $1T,

Interstate Highway System: $618B,

OpenAI Stargate: $500B,

The Apollo Project: $278B,

International Space Station: $180B,

South-North Water Transfer: $106B,

The Channel Tunnel: $31B,

Manhattan Project: $30B

Insane Stuff.