Separate an arithmetic result from a dated scenario

Energy & resource limits videos

This small energy collection includes forceful arguments about growth, transition and decline. Begin by distinguishing mathematical relationships from empirical assumptions about resources, substitution and the speed of social change.

Growth arithmetic and transition history

Bartlett’s lecture is useful for reconstructing the implications of a constant percentage growth rate. Smil’s presentation adds a historical perspective on the difficulty of changing energy systems. The arithmetic can be exact while a forecast built on it remains uncertain, because growth rates, technologies and behavior can change. Read the two as tools for examining scenarios rather than as independent proof of a particular date for resource exhaustion or societal collapse.

Choose a starting point

Arithmetic, Population and Energy - a talk by Al Bartlett

lXlSalemlXl

1h 15m · Uploaded 2013

Choose Bartlett’s lecture for a sustained argument about exponential growth. Recalculate examples and distinguish the arithmetic from its historical inputs.

Source video & uploader notes ↗

"Energy Revolution? More like a Crawl" - Dr. Vaclav Smil

Trottier Institute for Sustainability in Engineering and Design

1h 49m · Uploaded 2015

Choose Smil’s transition talk for a scale-and-history perspective. Its expectations should be compared with subsequent evidence rather than treated as current measurements.

Source video & uploader notes ↗

Questions to take into the video

Which result follows from mathematics, and which depends on an assumed growth rate, resource estimate or technology pathway?
What historical analogy is being used, and which present-day conditions differ from that analogy?

Old resource estimates and forecasts should not be repeated as current facts. Neither lecture establishes an inevitable collapse date or a complete assessment of today’s energy options.

Explore a connected subject

Renewables, batteries & storage ↗Macroeconomics & financial crises ↗

Sources and selection notes

By HackerTube Run. Updated November 2, 2026. We compared source-video titles, available uploader descriptions and the linked archive records. The choice of starting points and viewing questions is our editorial guidance. These notes do not claim full-video viewing or independent expert review.

The complete list below preserves the October 31, 2026 snapshot and its original score order. Its labels and summaries include AI-generated source material; topic membership is broader than our selected starting points. Availability and factual claims can change. Suggest a correction.