觉得最后的选择2，3不现实或者互相矛盾：
perimeter of the group project, lets say, it be a MFU apartment complex, with 30% minimum discount compare to market, area will be TX. at this point, we are not considering amount of money need to invest. exist strategy be, sell out or refi after 5 years, if refi, partners can choose to sell their shares or continue in partnership.
1. not interest in it at all.
2. interest in it if with guanrantee rate of return plus profit sharing.
3. interest in it if partnership offers guanrantee buy back after 5 years.
矛盾的地方在于1）没有人能够guanrantee rate of return plus profit sharing和guanrantee buy back after 5 years。2）partnership属于所有投资者，继续在partnership的投资者如何能够预先承诺买回要退出的投资者的股份呢？这不是预先自己向自己承诺吗？其次，作为投资者也期望回报，当然应该承受风险。假如不能承受风险就不应该投入。
