I'm sure the Zeiss takes better pictures, but for pure focal length, go for the Canon 5200mm

I love legos, and so do my kids. But when it costs $100 or more for a relatively small kit, my dreams of building anything at a grand scale go out the window.

An RS-232 serial cable is a simple, but effective interface between a laptop and all kinds of equipment. Just within my own home I have an alarm system and irrigation system that technicians plug into with serial cables to run diagnostics and program. I have a brand new surround receiver with a serial interface for a…