I am a semi-retired Product Development Scientist. Most of career was with HP in Silicon Valley, developing LED based sensors and later optics and materials for high power LED lighting. Have morphed into small scale investor. For 30 years have tried to follow advice given in book by Peter Lynch...more or less did what he promised I could and have self managed IRA better than almost all mutual funds, but started with almost zero funds...so able to support wife and myself, but am not wealthy. Now live in Portland OR.