Language is the most important communication medium for human beings。Interpersonal communication experience shows，If a unified language is used or the language used is highly homogeneous，It is conducive to the smooth progress of communication；On the contrary, there will be a certain degree of obstacles。This involves the issue of language unity and language diversity。Academic studies have shown，There is a correlation bet365 tennis bet and national economic and social development: if a country or society uses a unified language as a communication tool，It will be conducive to promoting economic and social development；On the contrary, it is not conducive to promoting economic and social development。What we found，The relationship bet365 tennis bet and economic and social development is not that simple。

　　The "Fishman-Poole Hypothesis" views bet365 tennis bet negatively

The impact of bet365 tennis bet on national economic and social development，It attracted the attention of American scholars as early as the 1950s and 1960s。Empirical research based on large-scale survey data，Fishman and Pool published two well-known reports。Fishman uses disaggregated data on global countries from the "Handbook of World Political and Social Indicators" and "Country Guide"，Adopt dichotomy，Compares a range of social and economic indicators between linguistically homogeneous and linguistically heterogeneous countries。Research findings，In mortality rate、Female life expectancy、Gross National Product、Government revenue、Higher education enrollment rate、Political democracy and television per capita、The number of radios and newspapers, etc.，Countries with homogeneous language are significantly better than countries with heterogeneous language。

Poole compiled data on bet365 tennis bet and per capita GDP of 133 countries，Use a scatter plot to represent the static relationship between these two sets of variables，Discovered that "a country with extremely complex languages ​​is always underdeveloped or semi-developed，A highly developed country always has a high degree of linguistic unity”。This conclusion became known as the "Fishman-Poole hypothesis"。

Poole research points out: bet365 tennis bet will not only exacerbate political regionalism，Hindering the unity of the country、Regional multi-ethnic integration and cooperation between groups，Obstruct the adaptation to the dominant culture、Support and participation in the regime，Reducing government efficiency and political stability，It also hinders career mobility and the spread of new technologies，Reduce economic efficiency and the speed of economic development。Zhou Qingsheng thinks accordingly，“Diversity of languages，No matter which situation it belongs to，It will hinder political and economic development”。Have to say，On how to view the issue of bet365 tennis bet，This is obviously a very negative attitude。

　　The "Inflection Point Hypothesis" reflects new bet365 tennis bet and economic changes

Nearly half a century，The international political and economic landscape and linguistic diversity have undergone tremendous changes。In recent years，World Bank、United Nations Development Program、UNESCO、"World Ethnolinguistics" published by the American International Language Research Center, etc.，Conducted more accurate and complete statistics on the economic and social development and language diversity data of countries around the world。To verify the "Fishman-Poole hypothesis"，Reveal more accurately the relationship bet365 tennis bet and national economic and social development，We selected the Human Development Index from the 2017 statistics of 189 countries and regions released by the United Nations Development Program、Average life expectancy、Average education time、Five data including average expected education time and per capita national income are used as national economic and social development indicators，Also selected the Linguistic Diversity Index of the same year from "World Ethnolinguistics"，Analysis of the correlation between linguistic diversity and economic and social development in countries around the world。

Analysis results display，Overall view，There is indeed a correlation bet365 tennis bet and national economic and social development index，But some data do not support the "Fishman-Poole hypothesis"。Poole on "A country with an extremely complex language is always underdeveloped or semi-developed，The argument that a highly developed country always has a high degree of linguistic unity"，Many counterexamples have appeared after more than half a century，There are quite a few countries with developed economies and high linguistic diversity。As in the top 5 countries with the highest per capita national income，There is Qatar、Singapore、Brunei、Kuwait and other 4 countries with high linguistic diversity。

Observing the scatter plot of the relationship bet365 tennis bet and per capita national income，We found that the correlation shows two different distribution characteristics: countries with a per capita national income below 20,000 US dollars show a very obvious negative correlation，Countries with a per capita national income of more than 20,000 US dollars show a completely opposite positive correlation，There is an interesting "inflection point" phenomenon。In order to find the accurate critical value of the inflection point，We divide the countries being counted into two categories: high-income countries and low- and middle-income countries，In the range of ,000 plus or minus ,000，Set a threshold of ,000 per distance，Calculate the correlation coefficients bet365 tennis bet and per capita national income for countries below and above the critical value。Computational discovery，The exact critical value of the turning point is ,000，Countries below ,000，There is a negative correlation between economic and social development and language diversity；Countries above ,000，There is a positive correlation between economic and social development and language diversity。In other words，Low-middle-income countries below the turning point，The correlation between its language diversity and per capita national income is still consistent with the "Fishman-Poole hypothesis"；High-income countries above the turning point，The correlation bet365 tennis bet and economic and social development shows a trend opposite to the "Fishman-Poole Hypothesis"。It can be seen from this，The overall relationship bet365 tennis bet and economic and social development is a segmented correlation marked by an inflection point，Countries below the turning point are negatively correlated，Countries above the turning point are positively correlated。We call this analysis conclusion the "inflection point hypothesis"。

　Correctly treat the "inflection bet365 tennis bet" phenomenon

The above analysis results show，There is indeed a certain degree of correlation bet365 tennis bet and various variables of economic and social development，However, this relationship will show different trends depending on the development stage of the country。After the “Fishman-Poole Hypothesis” was proposed，The economic and social development and language pattern of most countries in the world have undergone tremendous changes，Recent statistical analysis data more supports the "inflection point hypothesis" related to segmentation。Two types of countries above and below the “turning point”，Language diversity and economic and social development show opposite correlation trends。Segmented correlation between linguistic diversity and economic and social development，Reflects the dynamic relationship bet365 tennis bet and per capita national income in different countries at different stages of economic development，And this relationship will also be subject to specific politics、Society、Region、The joint influence of culture and other factors，And produce coordinated changes under the combined effect of these factors。

On the one hand，We see that due to the different stages of economic development between countries，There will be a very complex or even completely different relationship bet365 tennis bet and the economic and social development index of each country。On the other hand，We should also see that the segmented correlation bet365 tennis bet and economic and social development is only a probabilistic trend，Not an inevitable causal relationship，It will also be affected by many other factors。

Maintaining language diversity is a sign of a harmonious language ecology。Protecting and promoting linguistic diversity is receiving the attention of UNESCO and various governments。September 2018，The Chinese government, together with UNESCO, successfully held the first World Language Resources Protection Conference，The "Yuelu Declaration" with the theme of "Protecting Linguistic Diversity" was released。At the same time，Countries also need to consider the stage of their economic and social development，Scientific analysis of various internal and external changing conditions，Pay close attention to the interaction bet365 tennis bet and economic and social development，Develop an active language policy，Carry out scientific language management，Promote the synchronized sustainable and healthy development of language life and economy and society。Singapore provides an example to the international community。Singapore’s linguistic diversity is up to 0.761 ("World Ethnolinguistics"，2017），But per capita national income and human development index are among the highest in the world。This is due to the proactive language policy formulated by the Singaporean government，Carry out effective social management，Protect and promote language diversity，Language diversity does not have a negative impact on economic development and social stability。As Fishman said，"Only if active policies are formulated，Only linguistic heterogeneity at the political level will have a positive impact”。

　(This article is a phased result of the 2019 key project "Research on the Construction of Urban bet365 tennis bet Civilization in the New Era" (ZDI135-100) of the National bet365 tennis bet Commission's "Thirteenth Five-Year Plan" scientific research plan)

(Author’s unit: School of Liberal Arts, Xiaozhuang University, Nanjing；Nanjing University Overseas Education College、Chinese bet365 tennis bet Strategy Research Center)