Quantum Curiosities & Tech Revelations

This episode likely explores is the Libet effect: in the 1980s, neuroscientist Benjamin Libet had subjects flex their wrist whenever they felt the urge, while EEG tracked their brain activity. He found that a "readiness potential"; a buildup of neural activity in the motor cortex — fired roughly half a second before people consciously felt they'd decided to move. In other words, the brain appears to begin preparing a choice before we're aware of making it, which seems to demote conscious will from the cause of our actions to a kind of after-the-fact witness. This kicked off a decades-long free-will debate: some argue it proves free will is an illusion (we're just narrating what the brain already chose), while others counter that we may still have a "veto power" — the ability to consciously cancel a prepared action before it happens (Libet himself proposed this). More recent experiments have refined the picture, showing decision-related activity in the brain up to several seconds before choice in some cases, though critics point out the effect is strongest for trivial, spontaneous actions, not deliberate deliberation. Where the "quantum curiosities" angle comes in is the temptation to see quantum indeterminacy — true randomness at the subatomic level — as the loophole that rescues free will: if the brain amplifies quantum fluctuations, maybe our choices aren't fully determined by prior physical states. But physicists and philosophers usually respond with a dilemma: if a choice rides on quantum randomness, it's not free choice, just dice rolls — and either way, the conscious self still seems to arrive on the scene after the action has begun, not before. So the episode's takeaway is probably that the brain's "decision" unfolds earlier and more automatically than our inner sense of choosing suggests — a humbling mix of neuroscience, philosophy, and poorly little quantum sparkle.

The chatter around OpenAI's GPT-6 Astra has reached fever pitch. In this episode of Quantum Curiosities, hosts Anna and Professor Halloway cut through the hype to ask the question everyone's whispering: is this actually it — the moment artificial general intelligence stops being a phrase and becomes a thing?From Astra's real-time reasoning and multimodal fluency to the quiet benchmark numbers the press release glossed over, the pair dissect what a "general" intelligence would really need — and whether we're looking at a breakthrough, a very clever autocomplete, or something in between.

In this episode Anna and Professor Halloway examine the delayed-choice experiment. The delayed choice experiment demonstrates that a "wave or particle" is not a property of the photon alone, it's a property of the entire experiment, including choices made later. Nothing travels backward; the universe simply doesn't assign a definite wave/particle history to the photon until the full measurement context is fixed. It remains one of the most vivid (and misinterpreted) demonstrations of quantum weirdness — and a core reason quantum mechanics rejects naive realism about what's "really happening" between measurements.

Anna and Professor Halloway discuss Halloway's new science fiction book, The Keepers Of A Noble Breed. The discussion gets lively as Anna takes the opposing view that Professor Halloway intended as the writer of the book.

In this episode of Quantum Curiosities, we explore the fascinating intersection of acoustic physics, architecture, and human biology to investigate the real physical mechanics behind paranormal encounters. Centered around the paper "The 19Hz Frequency: The Physics of Perceived Apparitions," Anna and Professor Halloway break down how invisible environmental triggers, from insidious carbon monoxide leaks to inaudible, low-frequency sound waves known as infrasound, can hijack the human body. By examining landmark discoveries like Vic Tandy’s vibrating 19Hz laboratory fan and real-world experiments in subterranean spaces like Edinburgh's Mary King’s Close, this episode reveals how standing waves can literally vibrate our eyeballs to project shadowy optical illusions, spike our cortisol levels, and transform everyday rooms into accidental "ghost-making machines."