Seriously, are you trolling?
Why use a diagram which uses the European symbol for resistor rather then the American symbol for resistor? Wouldn't more people recognize the American standard?
Population of America (USA): 300 million
Population of Europe (EU): 500 million
So, er, no.
Why would anyone draw a schematic using MS Word?
Because they didn't have a napkin?
You are right, however, that a CAD program would be the right tool for the job. I recommend KiCAD. It's open source, cross-platform, and free.
Furthermore (and actually on topic), the solar garden lights can generate a lot of good and interesting ideas. I have read of a project that uses a step-up converter (a MAXIM chip) to power a weather station at 5V from a solar-lamp-based supply (1.2V), thus freeing it from wires. It had a wireless module to send its weather data periodically. Someone else had mounted the top panels from a number of lamps on their roof, and then ran small wires from the roof to the LEDs in the ceiling of the floor below, so that the rooms and hallways were always lit with a low background level of light. I myself did a simple hack for my mailbox: I pulled the top part off the lamp and soldered longer wires onto the LED. I mounted the top panel onto the top of my mailbox, and mounted the LED so it would shine on my house number on the front of the mailbox to make it more visible at night.
A