This idea is true for human travel on the curved surface of planet Earth, as well.
1	This	this	DET	DT	Number=Sing|PronType=Dem	2	det	2:det	Discourse=explanation-justify:17->16:1|Entity=(39-abstract-giv:act-cf1*-2-coref
2	idea	idea	NOUN	NN	Number=Sing	4	nsubj	4:nsubj	Entity=39)
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	4:cop	_
4	true	true	ADJ	JJ	Degree=Pos	0	root	0:root	_
5	for	for	ADP	IN	_	7	case	7:case	_
6	human	human	ADJ	JJ	Degree=Pos	7	amod	7:amod	Entity=(41-event-new-cf4-2-sgl
7	travel	travel	NOUN	NN	Number=Sing	4	obl	4:obl:for	_
8	on	on	ADP	IN	_	11	case	11:case	_
9	the	the	DET	DT	Definite=Def|PronType=Art	11	det	11:det	Entity=(42-place-new-cf3-3-sgl
10	curved	curved	ADJ	JJ	Degree=Pos	11	amod	11:amod	_
11	surface	surface	NOUN	NN	Number=Sing	7	nmod	7:nmod:on	_
12	of	of	ADP	IN	_	14	case	14:case	_
13	planet	planet	NOUN	NN	Number=Sing	14	compound	14:compound	Entity=(26-place-giv:inact-cf2-2-coref-Earth
14	Earth	Earth	PROPN	NNP	Number=Sing	11	nmod	11:nmod:of	Entity=26)42)41)|SpaceAfter=No
15	,	,	PUNCT	,	_	16	punct	16:punct	_
16	as	as	ADV	RB	_	4	advmod	4:advmod	_
17	well	well	ADV	RB	Degree=Pos	16	fixed	16:fixed	SpaceAfter=No
18	.	.	PUNCT	.	_	4	punct	4:punct	_
