yeah. do you think there is a way to broadcast brainwaves like a radio that can be picked up by multiple people?

Interesting question. Let me think through this seriously. The brain does emit electromagnetic signals:

Neural activity generates weak electromagnetic fields. These are what EEG and MEG detect. But they're incredibly weak — on the order of microvolts for EEG and femtotesla for magnetic fields. They attenuate rapidly with distance and the skull absorbs most of it

Could you amplify and broadcast them? In principle you could read brain signals, amplify them, and retransmit them as a stronger signal. But that's not really "broadcasting brainwaves" — that's reading, processing, encoding, and transmitting data. At that point you're just building a communication system with a brain as the input device, which is essentially what BCI research is doing.

Could raw brainwaves directly influence another brain? This is the more interesting question. For another brain to "pick up" the signal:

The receiver brain would need to be sensitive to whatever frequency you're broadcasting

Neural tissue does respond to external electromagnetic fields (that's how TMS works)

But TMS requires very strong, focused magnetic pulses — not the weak broadband signals brains produce

There's no known mechanism by which one brain's natural emissions could influence another brain at any meaningful distance

The radio analogy is actually instructive though:

Radio works because we have transmitters that produce strong, coherent signals on specific frequencies, and receivers tuned to those exact frequencies. Brains are neither strong transmitters nor tuned receivers. They're more like electrical noise generators. Broadcasting that noise louder doesn't make it meaningful to another brain — it would be like amplifying TV static and expecting another TV to display a picture from it.

Unless there's a shared encoding scheme — some common neural language between brains. There's actually some interesting research here. Studies on neural coupling show that when one person tells a story and another listens, their brain activity patterns synchronize. But that's happening through speech and hearing, not direct electromagnetic coupling.

The honest answer: with known physics, no. Brains aren't radios. But if someone discovered that brains have a resonance frequency or coupling mechanism we don't yet understand, it would change the picture entirely. That's speculative, but it's the kind of thing your "classified physics" argument would rest on.