Mark McGuire
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 143 | Founded | a year ago | Last Issue | 6 days ago |
| Active | |||||
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markmcguirequantum.substack.comLatest Issues
Your Classical Computer Just Hit a Wall
At some point someone is going to ask you whether your organization is prepared for quantum. You should be able to answer that question. Right now you probably can’t, but that’s entirely normal. The current landscape is dominated by convers...
The Model Problem Is the Crypto Problem - Except Everything Breaks
Imagine a simple scenario, one that likely played out in your company at least once in the last year.
GPT-5 replaced GPT-4o in many workflows, but it just didn’t work right. It didn’t respond to prompts the same way its predecessor did. A...
What comes after quantum computers?
Quantum computers don’t touch everything, but the domains they do will find them necessary. The same is true of string computers.
String theory attempts to unify quantum mechanics and gravity. Other theories exist, but string theory is the...
Three Ways LLMs Actually Get Used (Only Two Get Attention)
Watching AI adoption across different companies, organizations and industries, it’s becoming increasingly clear there’s really only three ways LLMs are used. They vary dramatically in the required LLM complexity and infrastructure required...
Your company has at least as much quantum exposure as a sandwich company.
Quantum doesn’t touch everything. But in the places it does touch, it becomes table stakes. Cryptography is one such place, and every company is exposed.
Your core business could be submarines, or sub sandwiches. But either way, you are ex...
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Authors
The writers behind this newsletter.
Quantum hardware founder and AI systems engineer. I write for the executives caught between vendor hype and technical reality without adding to either. Author of the HQx series. Chapter manager, QSECDEF.
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