Suppose you are a policy advisor who is responsible for developing a national level long term public investment policy. Supposed you are asked to discuss the effectiveness of investing on the efficiency of the current production technology and investing on the public education. Based on the model of human capital accumulation, discuss the key differences of these investment possibilities and explain which investment policy you would recommend and why. Discuss briefly what additional aspects of the real world you would consider when making such a recommendation which may be missing in the model?