Everyone who has a LinkedIn profile can post content.  Maybe you are using your profile to look for your next career move, find information on an industry or topic of interest, or just for professional networking. Reading another person's perspective in any previously mentioned categories could validate or change your mindset entirely.  By accepting someone new to your LinkedIn network, you can potentially find fresh insight that can help you grow in your career. 

All types of employees and employers are on LinkedIn, including big decision-makers like industry leaders, company CEOs, and influencers. They are often connected to many people they don't personally know.  They cast their nets wide and interact with their network. They frequently engage on posts, which could mean they also view profiles. Much like anyone else, they could be looking at how their connections could fit their hiring needs.  An ample opportunity might only be a few degrees of separation away, so why not accept the invitation?

Most people in our lives were once a stranger.  Trust isn't always automatically there.  It takes two to make the concerted effort to communicate, align goals, and support each other's interests.  There can be great value in new connections as you need them to continuously build your professional network and get your name out there.  Sometimes you have to put a bit of blind faith in those new connections and be willing to start that professional relationship from scratch to get the most out of your network.