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SOXL crashes -7.89%, Google ships Gemini 4 Argon, and how to grade a 40-step agent

SOXL crashes 7.89%, Google drops Gemini 4 Argon, and a deep senior-ML interview question on agent evaluation. Markets: SOXL -7.89% to $117.51; QQQ -0.99% to $736.21; VGT -1.26% to $124.89; VUG -0.83% to $90.99. AI news: Google DeepMind shipped Gemini 4 Argon, a broadly released frontier flagship model challenging OpenAI and Anthropic. Interview Tip of the Day: How do you evaluate an agent that takes 40 steps to finish a task? Did You Know: HP's first big customer was Walt Disney, who bought audio oscillators to make Fantasia in 1940. Questions or feedback: mahdi@brightmind-ai.com

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