The document contrasts the working styles of David and Jessica in an Enterprise 2.0 environment. David works traditional hours from 7am to 6pm in the office and focuses on responding to emails, while Jessica prioritizes results over hours and uses tools like instant messaging, wikis, blogs, and RSS feeds to collaborate and get information when needed. David relies on hierarchical information flows while Jessica values lateral connections inside and outside the company to share information and understand current trends to anticipate the future.