I have been to court with many clients who become angry with the vocational expert in their Social Security Disability hearing. This often comes with claims that the VE was desperately trying to find jobs the claimant could perform.
The truth is that while the VE is paid by the Social Security Administration, they are to give a neutral opinion and are not supposed to be on either side. The judge gives hypothetical questions to the vocational expert and the expert must answer based on the hypothetical that is given. Therefore, when a VE states jobs that can be performed, he is not claiming you specifically can do these jobs. Rather the VE is stating that the hypothetical person the judge described could perform these jobs.
An important thing to keep in mind is that just because a vocational expert says there are jobs available does not necessarily mean you have lost your case. Many judges like to throw out a bunch of hypotheticals to cover all their bases.