Today’s scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality.

Meaning of the quote

Some scientists today focus too much on math and equations instead of real-world experiments. They get lost in the numbers and create theories that don't match what's actually happening in the world.

About Nikola Tesla

Nikola Tesla was a Serbian-American engineer, futurist, and inventor known for his contributions to the design of the modern alternating current (AC) electricity supply system. He conducted a range of experiments, built the first wirelessly controlled boat, and pursued ideas for wireless lighting and power distribution, though he was unable to complete his ambitious Wardenclyffe Tower project.

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