- Do not start by building “Facebook for children”. - Do not make public profiles the centre. - Do not store everything forever. - Do not make the learning passport a permanent behavioural record. - Do not let parents publish children’s lives without the child’s assent. - Do not assume Solid alone solves safeguarding. Solid can provide a strong **data architecture**, but LOL Fish Club still needs child protection policy, moderation, community governance, parent training, legal review, security testing, and age-appropriate design.