. >> michael connolly said, anything to add to that? is this the right time in the valley? is there a bubble? >> i would like to speak about the clean technology sector. there was a little bit of a bubble that emerged in 2005, 2006, 2007 time frame. what has happened since then is you see the landscape changed. there have been a lot of companies and vc's, founders, that are focused on very few investments in companies but are in it for the long run. the time and invested it takes to build a clean tech company. the difference with clean tech, there might be large facilities required, investment to build your first plant, for instance. we are seeing a change in the landscape. one thing i want to add, too, for clean tech, there are organizations like the clean tech opened that foster innovation and identify and help on to produce with that system, present their idea, put together their business plan, attract the mentors and advisers to help them build their technology. the incubators are contributing to a maturing clean tech and biotech sector -- sector. >> just a short commen