[{'role': 'user', 'content': "Analyze the following clause from a privacy policy and determine if it's fair or unfair. Also identify any privacy practices mentioned: Changes to this privacy policy pescAPPs has the discretion to update this privacy policy at any time. When we do, we will revise the updated date at the bottom of this page. We encourage Users to frequently check this page for any changes to stay informed about how we are helping to protect the personal information we collect. You acknowledge and agree that it is your responsibility to review this privacy policy periodically and become aware of modifications."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]