# I am the Watcher. I am your guide through this vast new twtiverse.
# 
# Usage:
#     https://watcher.sour.is/api/plain/users              View list of users and latest twt date.
#     https://watcher.sour.is/api/plain/twt                View all twts.
#     https://watcher.sour.is/api/plain/mentions?uri=:uri  View all mentions for uri.
#     https://watcher.sour.is/api/plain/conv/:hash         View all twts for a conversation subject.
# 
# Options:
#     uri     Filter to show a specific users twts.
#     offset  Start index for quey.
#     limit   Count of items to return (going back in time).
# 
# twt range = 1 1
# self = https://watcher.sour.is/conv/luvxjiq
哪一位实证经济学家(empirical/appied)最具影响力?**
计量里的两大流派,reduced form和structural form,上面几个回答提到的Angrist是reduced form的代表,过去十几年来几乎主导了实证经济学。但在我所在的trade economics,以及更广义的spatial/regional/urban economics,却越来越强调structural。与IO领域的structural不同的是,trade领域structural往往建立在一般均衡(general equilibrium)基础上。Eaton & Kortum(2002)建立了一个简洁而又traceable的一般均衡框架,来刻画国际贸易活动。以此为基础,过去十多年整个empirical trade领域逐渐兴起了一股潮流,把越来越多的经济因素加进来,逐渐占据了empirical trade的主流。原因我觉得是因为trade是一个policy-oriented的学科,而structura ... ⌘ Read more