At a time when design trends and tastes seem to fluctuate with increasing speed, one image has remained remarkably persistent: the Apple logo. Often remixed but never replaced, the symbol has been continuously in use in one form or another since graphic designer Rob Janoff first sketched it in 1977. 9to5Mac talked with Janoff about his time working with Steve Jobs, the perspective gained from working over 40 years in the design industry, and an upcoming creative collaboration.