I'm convinced that the NSA is actively thwarting computer security to make their job easy in the long term.
I believe that mankind was almost wiped out 14000 years ago during the Younger Dryas disaster. Echoes of this are recorded as the great flood, and fire from the sky.
I believe that a computing fabric based on 4x4 bit look up tables clocked in alternate phases (like a chess board) can be an Exaflop computing platform offering near perfect security, fault tolerance, and scalability.
I believe capability based security is the only way to end all of our grief with computer security issues. We won't be safe until it's been widely deployed for a few years and all the bugs are worked out in the microkernels.
I believe that inertia might be quantized, and if so, it might be possible to take advantage of this to build spacecraft that don't need exhaust to work.
I believe that Electromagnetic Vector Potential is real, not just a mathematical convenience for physics theories. It may be possible to exploit this for some interesting real world applications. I really, REALLY want a detector like a SQUID to play with to find those applications.
I believe that cold fusion works, it's just hard to replicate.
I believe that Pascal is a far better programming language than C, especially as realized in Free Pascal.
I believe that no modern OS is anywhere near as safe as IBM DOS on an IBM XT with dual floppy drives, with a write protected boot disk. The machine was so simple, there's really no place for malware to hide. The only way to get past this high water mark is capability based security.