61.57(c) discusses the recency of instrument experience requirements under actual or simulated conditions. Two questions: (1) Am I correct that to qualify as "simulated" conditions, the pilot must wear a vision-restricting device (i.e. can't just execute the approach/maneuvers unrestricted in VFR conditions); (2) What are the qualifications the safety pilot must possess in terms of pilot certificate, currency in aircraft, etc. Flight would be in a C-172 for example.