Monday, August 24, 2026 Morning Edition Back Issues

The Science & Tech Times

“All the discoveries fit to print”

AI

Why we must stop talking about artificial general intelligence — and instead build ‘pro-worker’ AI

This shift is crucial because it could prevent unprecedented job displacement by ensuring economic opportunity remains accessible to all citizens and preserving democratic stability through shared prosperity.

The article argues that while current AI trends focus on replacing human labor, a pro-worker approach can enhance capabilities rather than displacing them.

  • Automation has historically increased inequality by reducing demand for routine tasks, but a pro-worker AI strategy can mitigate this risk.
  • Policymakers should encourage innovation that complements human labor instead of solely substituting it.
  • Examples like personalized teaching support demonstrate how AI tools can augment educators rather than replace them entirely.
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AI

Dialkyl ether synthesis through heteroatom homolytic substitution

This approach overcomes steric limitations in classical SN2 reactions by accessing a vast chemical space inaccessible through conventional polar nucleophilic substitution, facilitating late-stage diversification for complex pharmaceutical scaffolds.

A radical-based heteroatom homolytic substitution mechanism enables the selective synthesis of sterically congested dialkyl ethers using titanium and visible-light photoredox catalysis.

  • Utilizes an underutilized heteroatom homolytic substitution (het-SH2) mechanism to bypass the sterically congested transition state of SN2 reactions.
  • Employs a titanium-based catalytic platform combined with visible-light photoredox chemistry for efficient coupling across various alkyl architectures including 3°–1°.
  • Provides access to dialkyl ether bioisosteres such as BCP ethers that are otherwise difficult or impossible to synthesize via standard methods.
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