I would like to thank you for writing and continually updating crack the core and war machine. I would be a worse radiologist and would not have passed the core without these books. Your sense of humor and straight to the point explanations are greatly appreciated. For the sake of future residency classes, please continue fighting the good fight.

Most awesome radiology lectures/talks hands-down, ever. Straight to the point. Strategy-based and entertaining. Helping me TONS. I love you Prometheus !!

Thanks for helping this dumb jock pass the Core. Your materials are definitely the best out there.

The material tested by the core exam is immense and intimidating. The board review course and the Crack the Core Exam books provided a focused, high-yield method to approach studying for such a seemingly overwhelming exam. I listened to the entire board review course about 4-5 times and read through the review books twice. I also read through the dedicated physics review book, The War Machine, and the case companion books. I am confident that this helped me feel prepared for the core exam, dominate each section and pass the exam with a score well above the passing cut-offs.

Just took the test this year and passed. The Crack the Core books are a must use! The way he explains it makes things, even extremely dry concepts, entertaining and simple. I cannot recommend this material strongly enough.