This service is a mobile web app of the thought lab is published Brain Complementary Plan 100, Brain Complementary Plan 200 series. (ithink.kr) This service allows you to train your logic fundamentals and critical thinking, deepen your reading comprehension, and improve your understanding of philosophy and science.The people who need to use this service are:사람들 People who want to improve their reading skills사람들 Those who are interested in the history of science, philosophy of science, scientific method, history of technology, philosophy of technology, grand historyThose who are interested in the history and philosophy of ∘ 앎사람들 People who need to write articles such as essay writings, articles, articles, columns, etc.사람들 Those who prepare for the test of thinking ability such as PSAT, LEET, TOCT사람들 Those who prepare for job aptitude tests for large companies such as the GSAT사람들 People preparing for SAT사람들 People who pursue more precise and accurate knowledgeAfter purchasing the brain supplement book, you can ask questions you dont know through this service, and you can get answers directly through the author and the thought lab researcher.