It could, but Marx's mistake was not a new one.
1	It	it	PRON	PE	Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	could	can	AUX	VM	Mood=Ind|Person=3|Tense=Past|VerbForm=Fin	0	root	_	SpaceAfter=No
3	,	,	PUNCT	FF	_	12	punct	_	_
4	but	but	CCONJ	CC	_	12	cc	_	_
5	Marx	Marx	PROPN	SP	_	7	nmod	_	SpaceAfter=No
6	's	's	PART	PART	_	5	case	_	_
7	mistake	mistake	NOUN	S	Number=Sing	12	nsubj	_	_
8	was	be	AUX	V	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	12	cop	_	_
9	not	not	PART	PART	Polarity=Neg	12	advmod	_	_
10	a	a	DET	RI	Definite=Ind|Number=Sing|PronType=Art	12	det	_	_
11	new	new	ADJ	A	Degree=Pos	12	amod	_	_
12	one	one	PRON	PE	Number=Sing|Person=3|PronType=Prs	2	conj	_	SpaceAfter=No
13	.	.	PUNCT	FS	_	2	punct	_	_
