This is the peer-reviewed version of the following article: Mokrysz, C & Freeman, TP 2018, 'Commentary on Meier et al. (2018): Smoke and mirrors-are adolescent cannabis users vulnerable to cognitive impairment?' Addiction, vol. 113, no. 2, pp. 266-267 which has been published in final form at: https://doi.org/10.1111/add.14055 . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.